CVE-2021-29457

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 80.5% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-04-19 00:00Z5 YR AGO

Last updated

2024-08-03 22:02Z2 YR AGO

Reserved

2021-03-30

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-122Heap-based Buffer OverflowVariant
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

301a6b7c163a477a3ce3726c4006e0b4ea9ac91b9d209f28f8ef837f6f943304

• github.comhttps://github.com/Exiv2/exiv2/issues/1529
• github.comhttps://github.com/Exiv2/exiv2/security/advisories/GHSA-v74w-h496-cgqm
• github.comhttps://github.com/Exiv2/exiv2/pull/1534
• lists.fedoraproject.orgFEDORA-2021-10d7331a31https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2XQT5F5IINTDYDAFGVGQZ7PMMLG7I5ZZ/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-be94728b95https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P2A5GMJEXQ5Q76JK6F6VKK5JYCLVFGKN/vendor-advisory
• www.debian.orgDSA-4958https://www.debian.org/security/2021/dsa-4958vendor-advisory
• lists.debian.org[debian-lts-announce] 20210830 [SECURITY] [DLA 2750-1] exiv2 security updatehttps://lists.debian.org/debian-lts-announce/2021/08/msg00028.htmlmailing-list
• security.gentoo.orgGLSA-202312-06https://security.gentoo.org/glsa/202312-06vendor-advisory