CVE-2021-40263

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 64.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/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

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2023-08-22 00:00Z3 YR AGO

Last updated

2024-10-03 18:07Z1 YR AGO

Reserved

2021-08-30

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

77c1794e1e134a25047960c803dc2be0f401d85afbb7e7508872ef50d9406d7b

• sourceforge.nethttps://sourceforge.net/p/freeimage/bugs/336/
• lists.fedoraproject.orgFEDORA-2023-604a7d56b0https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M6GKMK74POW3RU7F4HLUJE7XEFLQDO35/vendor-advisory
• lists.fedoraproject.orgFEDORA-2023-8e640cb540https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HFRQ76ZDPSWT7OH6FJDLSFWBXVBE6JDN/vendor-advisory