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Package details: pkg:deb/debian/libssh2@1.2.6-1%2Bdeb6u2
purl pkg:deb/debian/libssh2@1.2.6-1%2Bdeb6u2
Next non-vulnerable version 1.9.0-2+deb11u1
Latest non-vulnerable version 1.9.0-2+deb11u1
Risk 4.5
Vulnerabilities affecting this package (14)
Vulnerability Summary Fixed by
VCID-97nz-s1q6-x3fc
Aliases:
CVE-2019-3861
Out-of-bounds Read An out-of-bounds read flaw was discovered in libssh2 in the way SSH packets with a padding length value greater than the packet length are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
1.7.0-1+deb9u1
Affected by 12 other vulnerabilities.
1.8.0-2.1
Affected by 3 other vulnerabilities.
VCID-bcba-qntz-gkez
Aliases:
CVE-2019-3863
Out-of-bounds Write A flaw was found in libssh2 A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used as an index to copy memory causing in an out-of-bounds memory write error.
1.7.0-1+deb9u1
Affected by 12 other vulnerabilities.
1.8.0-2.1
Affected by 3 other vulnerabilities.
VCID-chdt-29cx-dyas
Aliases:
CVE-2015-1782
Improper Input Validation The kex_agree_methods function in libssh2 allows remote servers to cause a denial of service (crash) or have other unspecified impact via crafted length values in an SSH_MSG_KEXINIT packet.
1.4.2-1.1+deb7u2
Affected by 14 other vulnerabilities.
1.4.3-4.1
Affected by 13 other vulnerabilities.
VCID-cmy6-8sjv-n3h1
Aliases:
CVE-2016-0787
Exposure of Sensitive Information to an Unauthorized Actor The diffie_hellman_sha256 function in kex.c in libssh2 improperly truncates secrets to bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."
1.4.2-1.1+deb7u2
Affected by 14 other vulnerabilities.
1.4.3-4.1+deb8u1
Affected by 13 other vulnerabilities.
1.7.0-1+deb9u1
Affected by 12 other vulnerabilities.
VCID-f1me-9vqd-j7f6
Aliases:
CVE-2019-3855
Out-of-bounds Write An integer overflow flaw which could lead to an out-of-bounds write was discovered in libssh2 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
1.7.0-1+deb9u1
Affected by 12 other vulnerabilities.
1.8.0-2.1
Affected by 3 other vulnerabilities.
VCID-grd5-zwxv-cqfw
Aliases:
CVE-2019-17498
libssh2: integer overflow in SSH_MSG_DISCONNECT logic in packet.c
1.9.0-2+deb11u1
Affected by 0 other vulnerabilities.
VCID-gv2u-298u-jkcv
Aliases:
CVE-2019-3859
Out-of-bounds Read An out-of-bounds read flaw was discovered in libssh2 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
1.7.0-1+deb9u1
Affected by 12 other vulnerabilities.
1.8.0-2.1
Affected by 3 other vulnerabilities.
VCID-jp7j-dwbq-zkgk
Aliases:
CVE-2019-13115
libssh2: integer overflow in kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c leads to out-of-bounds write
1.9.0-2+deb11u1
Affected by 0 other vulnerabilities.
VCID-k1js-k8q3-ekb2
Aliases:
CVE-2019-3860
Out-of-bounds Read An out-of-bounds read flaw was discovered in libssh2 in the way SFTP packets with empty payloads are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
1.7.0-1+deb9u1
Affected by 12 other vulnerabilities.
1.8.0-2.1
Affected by 3 other vulnerabilities.
VCID-mevw-g6yq-eqa8
Aliases:
CVE-2019-3857
Out-of-bounds Write An integer overflow flaw which could lead to an out-of-bounds write was discovered in libssh2 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
1.7.0-1+deb9u1
Affected by 12 other vulnerabilities.
1.8.0-2.1
Affected by 3 other vulnerabilities.
VCID-qjzc-2hvn-2qg3
Aliases:
CVE-2019-3856
Out-of-bounds Write An integer overflow flaw, which could lead to an out-of-bounds write, was discovered in libssh2 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
1.7.0-1+deb9u1
Affected by 12 other vulnerabilities.
1.8.0-2.1
Affected by 3 other vulnerabilities.
VCID-rv81-jwkz-w7b5
Aliases:
CVE-2019-3858
Out-of-bounds Read An out-of-bounds read flaw was discovered in libssh2 when a specially crafted SFTP packet is received from the server. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
1.7.0-1+deb9u1
Affected by 12 other vulnerabilities.
1.8.0-2.1
Affected by 3 other vulnerabilities.
VCID-sy5b-nfqk-6ucm
Aliases:
CVE-2019-3862
Out-of-bounds Read An out-of-bounds read flaw was discovered in libssh2 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit status message and no payload are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
1.7.0-1+deb9u1
Affected by 12 other vulnerabilities.
1.8.0-2.1
Affected by 3 other vulnerabilities.
VCID-wka6-6yn3-ubb1
Aliases:
CVE-2020-22218
libssh2: use-of-uninitialized-value in _libssh2_transport_read
1.9.0-2+deb11u1
Affected by 0 other vulnerabilities.
Vulnerabilities fixed by this package (0)
Vulnerability Summary Aliases
This package is not known to fix vulnerabilities.

Date Actor Action Vulnerability Source VulnerableCode Version
2026-04-16T01:10:42.088042+00:00 Debian Oval Importer Affected by VCID-f1me-9vqd-j7f6 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-16T00:02:06.508089+00:00 Debian Oval Importer Affected by VCID-wka6-6yn3-ubb1 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T21:30:52.443268+00:00 Debian Oval Importer Affected by VCID-grd5-zwxv-cqfw https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T21:22:40.993540+00:00 Debian Oval Importer Affected by VCID-k1js-k8q3-ekb2 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T20:56:50.949052+00:00 Debian Oval Importer Affected by VCID-bcba-qntz-gkez https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T19:44:47.959004+00:00 Debian Oval Importer Affected by VCID-chdt-29cx-dyas https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T19:39:08.733051+00:00 Debian Oval Importer Affected by VCID-gv2u-298u-jkcv https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T18:38:34.955644+00:00 Debian Oval Importer Affected by VCID-sy5b-nfqk-6ucm https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T16:52:25.380226+00:00 Debian Oval Importer Affected by VCID-jp7j-dwbq-zkgk https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T16:17:16.995594+00:00 Debian Oval Importer Affected by VCID-cmy6-8sjv-n3h1 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T16:11:27.098767+00:00 Debian Oval Importer Affected by VCID-qjzc-2hvn-2qg3 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T16:03:07.082191+00:00 Debian Oval Importer Affected by VCID-97nz-s1q6-x3fc https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T15:41:02.719526+00:00 Debian Oval Importer Affected by VCID-mevw-g6yq-eqa8 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T15:20:50.614678+00:00 Debian Oval Importer Affected by VCID-rv81-jwkz-w7b5 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.4.0
2026-04-15T14:40:03.289159+00:00 Debian Oval Importer Affected by VCID-97nz-s1q6-x3fc https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.4.0
2026-04-15T14:34:10.054698+00:00 Debian Oval Importer Affected by VCID-rv81-jwkz-w7b5 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.4.0
2026-04-15T14:30:03.048680+00:00 Debian Oval Importer Affected by VCID-sy5b-nfqk-6ucm https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.4.0
2026-04-15T14:26:53.141529+00:00 Debian Oval Importer Affected by VCID-mevw-g6yq-eqa8 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.4.0
2026-04-15T14:20:21.694140+00:00 Debian Oval Importer Affected by VCID-qjzc-2hvn-2qg3 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.4.0
2026-04-15T14:17:35.511641+00:00 Debian Oval Importer Affected by VCID-bcba-qntz-gkez https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.4.0
2026-04-15T14:17:29.071835+00:00 Debian Oval Importer Affected by VCID-k1js-k8q3-ekb2 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.4.0
2026-04-15T14:16:03.006798+00:00 Debian Oval Importer Affected by VCID-gv2u-298u-jkcv https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.4.0
2026-04-15T14:08:57.996072+00:00 Debian Oval Importer Affected by VCID-f1me-9vqd-j7f6 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.4.0
2026-04-15T13:39:53.793836+00:00 Debian Oval Importer Affected by VCID-cmy6-8sjv-n3h1 https://www.debian.org/security/oval/oval-definitions-jessie.xml.bz2 38.4.0
2026-04-15T13:19:14.676533+00:00 Debian Oval Importer Affected by VCID-cmy6-8sjv-n3h1 https://www.debian.org/security/oval/oval-definitions-wheezy.xml.bz2 38.4.0
2026-04-15T13:11:15.855214+00:00 Debian Oval Importer Affected by VCID-chdt-29cx-dyas https://www.debian.org/security/oval/oval-definitions-wheezy.xml.bz2 38.4.0
2026-04-12T00:42:34.055301+00:00 Debian Oval Importer Affected by VCID-f1me-9vqd-j7f6 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T23:36:13.549156+00:00 Debian Oval Importer Affected by VCID-wka6-6yn3-ubb1 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T21:09:56.547173+00:00 Debian Oval Importer Affected by VCID-grd5-zwxv-cqfw https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T21:02:10.846133+00:00 Debian Oval Importer Affected by VCID-k1js-k8q3-ekb2 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T20:37:13.112049+00:00 Debian Oval Importer Affected by VCID-bcba-qntz-gkez https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T19:27:14.066998+00:00 Debian Oval Importer Affected by VCID-chdt-29cx-dyas https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T19:21:46.391559+00:00 Debian Oval Importer Affected by VCID-gv2u-298u-jkcv https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T18:23:07.736738+00:00 Debian Oval Importer Affected by VCID-sy5b-nfqk-6ucm https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T16:39:09.618577+00:00 Debian Oval Importer Affected by VCID-jp7j-dwbq-zkgk https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T16:04:37.461642+00:00 Debian Oval Importer Affected by VCID-cmy6-8sjv-n3h1 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T15:58:53.791969+00:00 Debian Oval Importer Affected by VCID-qjzc-2hvn-2qg3 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T15:50:41.005591+00:00 Debian Oval Importer Affected by VCID-97nz-s1q6-x3fc https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T15:28:52.157436+00:00 Debian Oval Importer Affected by VCID-mevw-g6yq-eqa8 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T15:09:06.950366+00:00 Debian Oval Importer Affected by VCID-rv81-jwkz-w7b5 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.3.0
2026-04-11T14:28:20.667876+00:00 Debian Oval Importer Affected by VCID-97nz-s1q6-x3fc https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.3.0
2026-04-11T14:22:27.487370+00:00 Debian Oval Importer Affected by VCID-rv81-jwkz-w7b5 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.3.0
2026-04-11T14:18:21.673977+00:00 Debian Oval Importer Affected by VCID-sy5b-nfqk-6ucm https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.3.0
2026-04-11T14:15:13.170476+00:00 Debian Oval Importer Affected by VCID-mevw-g6yq-eqa8 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.3.0
2026-04-11T14:08:46.695233+00:00 Debian Oval Importer Affected by VCID-qjzc-2hvn-2qg3 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.3.0
2026-04-11T14:06:06.512716+00:00 Debian Oval Importer Affected by VCID-bcba-qntz-gkez https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.3.0
2026-04-11T14:05:59.837039+00:00 Debian Oval Importer Affected by VCID-k1js-k8q3-ekb2 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.3.0
2026-04-11T14:04:34.528914+00:00 Debian Oval Importer Affected by VCID-gv2u-298u-jkcv https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.3.0
2026-04-11T13:57:31.923001+00:00 Debian Oval Importer Affected by VCID-f1me-9vqd-j7f6 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.3.0
2026-04-11T13:28:36.637496+00:00 Debian Oval Importer Affected by VCID-cmy6-8sjv-n3h1 https://www.debian.org/security/oval/oval-definitions-jessie.xml.bz2 38.3.0
2026-04-11T13:07:59.152677+00:00 Debian Oval Importer Affected by VCID-cmy6-8sjv-n3h1 https://www.debian.org/security/oval/oval-definitions-wheezy.xml.bz2 38.3.0
2026-04-11T12:59:59.598152+00:00 Debian Oval Importer Affected by VCID-chdt-29cx-dyas https://www.debian.org/security/oval/oval-definitions-wheezy.xml.bz2 38.3.0
2026-04-09T00:12:22.007987+00:00 Debian Oval Importer Affected by VCID-f1me-9vqd-j7f6 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T23:08:51.845857+00:00 Debian Oval Importer Affected by VCID-wka6-6yn3-ubb1 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T20:48:56.824494+00:00 Debian Oval Importer Affected by VCID-grd5-zwxv-cqfw https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T20:41:27.219889+00:00 Debian Oval Importer Affected by VCID-k1js-k8q3-ekb2 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T20:17:18.371724+00:00 Debian Oval Importer Affected by VCID-bcba-qntz-gkez https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T19:10:46.367559+00:00 Debian Oval Importer Affected by VCID-chdt-29cx-dyas https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T19:05:29.738509+00:00 Debian Oval Importer Affected by VCID-gv2u-298u-jkcv https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T18:09:06.094956+00:00 Debian Oval Importer Affected by VCID-sy5b-nfqk-6ucm https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T16:29:47.229160+00:00 Debian Oval Importer Affected by VCID-jp7j-dwbq-zkgk https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T15:57:25.151341+00:00 Debian Oval Importer Affected by VCID-cmy6-8sjv-n3h1 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T15:51:59.931752+00:00 Debian Oval Importer Affected by VCID-qjzc-2hvn-2qg3 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T15:44:06.442446+00:00 Debian Oval Importer Affected by VCID-97nz-s1q6-x3fc https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T15:23:12.488242+00:00 Debian Oval Importer Affected by VCID-mevw-g6yq-eqa8 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T15:04:14.323428+00:00 Debian Oval Importer Affected by VCID-rv81-jwkz-w7b5 https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.1.0
2026-04-08T13:07:14.853346+00:00 Debian Oval Importer Affected by VCID-cmy6-8sjv-n3h1 https://www.debian.org/security/oval/oval-definitions-wheezy.xml.bz2 38.1.0
2026-04-07T23:01:44.560072+00:00 Debian Oval Importer Affected by VCID-97nz-s1q6-x3fc https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.1.0
2026-04-07T22:56:02.018286+00:00 Debian Oval Importer Affected by VCID-rv81-jwkz-w7b5 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.1.0
2026-04-07T22:52:05.306369+00:00 Debian Oval Importer Affected by VCID-sy5b-nfqk-6ucm https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.1.0
2026-04-07T22:49:01.657981+00:00 Debian Oval Importer Affected by VCID-mevw-g6yq-eqa8 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.1.0
2026-04-07T22:42:48.013367+00:00 Debian Oval Importer Affected by VCID-qjzc-2hvn-2qg3 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.1.0
2026-04-07T22:40:10.508005+00:00 Debian Oval Importer Affected by VCID-bcba-qntz-gkez https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.1.0
2026-04-07T22:40:00.556958+00:00 Debian Oval Importer Affected by VCID-k1js-k8q3-ekb2 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.1.0
2026-04-07T22:38:43.370930+00:00 Debian Oval Importer Affected by VCID-gv2u-298u-jkcv https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.1.0
2026-04-07T22:32:14.554104+00:00 Debian Oval Importer Affected by VCID-f1me-9vqd-j7f6 https://www.debian.org/security/oval/oval-definitions-stretch.xml.bz2 38.1.0
2026-04-07T22:04:21.203429+00:00 Debian Oval Importer Affected by VCID-cmy6-8sjv-n3h1 https://www.debian.org/security/oval/oval-definitions-jessie.xml.bz2 38.1.0
2026-04-07T21:34:54.733004+00:00 Debian Oval Importer Affected by VCID-chdt-29cx-dyas https://www.debian.org/security/oval/oval-definitions-wheezy.xml.bz2 38.1.0