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Vulnerability details: VCID-qun9-n3cd-d7cq
Vulnerability ID VCID-qun9-n3cd-d7cq
Aliases CVE-2018-25103
Summary There exists use-after-free vulnerabilities in lighttpd <= 1.4.50 request parsing which might read from invalid pointers to memory used in the same request, not from other requests.
Status Published
Exploitability 0.5
Weighted Severity 4.8
Risk 2.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
cvssv3.1 5.3 https://9443417.fs1.hubspotusercontent-na1.net/hubfs/9443417/Security%20Advisories/2024/AMI-SA-2024002.pdf
ssvc Track https://9443417.fs1.hubspotusercontent-na1.net/hubfs/9443417/Security%20Advisories/2024/AMI-SA-2024002.pdf
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
epss 0.00146 https://api.first.org/data/v1/epss?cve=CVE-2018-25103
cvssv3.1 5.3 https://blogvdoo.wordpress.com/2018/11/06/giving-back-securing-open-source-iot-projects/#more-736
ssvc Track https://blogvdoo.wordpress.com/2018/11/06/giving-back-securing-open-source-iot-projects/#more-736
cvssv3.1 8.2 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 5.3 https://github.com/lighttpd/lighttpd1.4/commit/d161f53de04bc826ce1bdaeb3dce2c72ca50a3f8
ssvc Track https://github.com/lighttpd/lighttpd1.4/commit/d161f53de04bc826ce1bdaeb3dce2c72ca50a3f8
cvssv3.1 5.3 https://github.com/lighttpd/lighttpd1.4/commit/df8e4f95614e476276a55e34da2aa8b00b1148e9
ssvc Track https://github.com/lighttpd/lighttpd1.4/commit/df8e4f95614e476276a55e34da2aa8b00b1148e9
cvssv3.1 5.3 https://www.kb.cert.org/vuls/id/312260
ssvc Track https://www.kb.cert.org/vuls/id/312260
cvssv3.1 5.3 https://www.runzero.com/blog/lighttpd/
ssvc Track https://www.runzero.com/blog/lighttpd/
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2018-25103
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-25103
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
312260 https://www.kb.cert.org/vuls/id/312260
AMI-SA-2024002.pdf https://9443417.fs1.hubspotusercontent-na1.net/hubfs/9443417/Security%20Advisories/2024/AMI-SA-2024002.pdf
CVE-2018-25103 https://nvd.nist.gov/vuln/detail/CVE-2018-25103
d161f53de04bc826ce1bdaeb3dce2c72ca50a3f8 https://github.com/lighttpd/lighttpd1.4/commit/d161f53de04bc826ce1bdaeb3dce2c72ca50a3f8
df8e4f95614e476276a55e34da2aa8b00b1148e9 https://github.com/lighttpd/lighttpd1.4/commit/df8e4f95614e476276a55e34da2aa8b00b1148e9
lighttpd https://www.runzero.com/blog/lighttpd/
#more-736 https://blogvdoo.wordpress.com/2018/11/06/giving-back-securing-open-source-iot-projects/#more-736
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://9443417.fs1.hubspotusercontent-na1.net/hubfs/9443417/Security%20Advisories/2024/AMI-SA-2024002.pdf
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-01T20:51:04Z/ Found at https://9443417.fs1.hubspotusercontent-na1.net/hubfs/9443417/Security%20Advisories/2024/AMI-SA-2024002.pdf
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://blogvdoo.wordpress.com/2018/11/06/giving-back-securing-open-source-iot-projects/#more-736
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-01T20:51:04Z/ Found at https://blogvdoo.wordpress.com/2018/11/06/giving-back-securing-open-source-iot-projects/#more-736
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/lighttpd/lighttpd1.4/commit/d161f53de04bc826ce1bdaeb3dce2c72ca50a3f8
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-01T20:51:04Z/ Found at https://github.com/lighttpd/lighttpd1.4/commit/d161f53de04bc826ce1bdaeb3dce2c72ca50a3f8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/lighttpd/lighttpd1.4/commit/df8e4f95614e476276a55e34da2aa8b00b1148e9
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-01T20:51:04Z/ Found at https://github.com/lighttpd/lighttpd1.4/commit/df8e4f95614e476276a55e34da2aa8b00b1148e9
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://www.kb.cert.org/vuls/id/312260
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-01T20:51:04Z/ Found at https://www.kb.cert.org/vuls/id/312260
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://www.runzero.com/blog/lighttpd/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-01T20:51:04Z/ Found at https://www.runzero.com/blog/lighttpd/
Exploit Prediction Scoring System (EPSS)
Percentile 0.35751
EPSS Score 0.00146
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T09:48:41.537883+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2018/25xxx/CVE-2018-25103.json 37.0.0