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Vulnerability details: VCID-jadc-52tv-tqhq
Vulnerability ID VCID-jadc-52tv-tqhq
Aliases CVE-2021-3826
Summary libiberty: Heap/stack buffer overflow in the dlang_lname function in d-demangle.c
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3826.json
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00368 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
epss 0.00427 https://api.first.org/data/v1/epss?cve=CVE-2021-3826
cvssv3.1 6.6 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-3826
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3826.json
https://api.first.org/data/v1/epss?cve=CVE-2021-3826
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3826
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://gcc.gnu.org/git/?p=gcc.git%3Ba=commit%3Bh=5481040197402be6dfee265bd2ff5a4c88e30505
https://gcc.gnu.org/pipermail/gcc-patches/2021-September/579987
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4MYLS3VR4OPL5ECRWOR4ZHMGXUSCJFZY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6AKZ2DTS3ATVN5PANNVLKLE5OP4OF25Q/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7MTEHT3G6YKJ7F7MSGWYSI4UM3XBAYXZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AXFC74WRZ2Q7F2TSUKPYNIL7ZPBWYI6L/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/
2122627 https://bugzilla.redhat.com/show_bug.cgi?id=2122627
cpe:2.3:a:gnu:gcc:11.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:gnu:gcc:11.2:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
CVE-2021-3826 https://nvd.nist.gov/vuln/detail/CVE-2021-3826
RHSA-2023:3269 https://access.redhat.com/errata/RHSA-2023:3269
RHSA-2023:6372 https://access.redhat.com/errata/RHSA-2023:6372
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3826.json
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:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/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:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-3826
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
Exploit Prediction Scoring System (EPSS)
Percentile 0.57943
EPSS Score 0.00368
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T10:14:00.905523+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3826.json 37.0.0