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Fencer Vulns
high 8.8

CVE-2021-23169 json

A heap-buffer overflow was found in the copyIntoFrameBuffer function of OpenEXR in versions before 3.0.1.

published 2021-06-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-10279

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

A heap-buffer overflow was found in the copyIntoFrameBuffer function of OpenEXR in versions before 3.0.1. An attacker could use this flaw to execute arbitrary code with the permissions of the user running the application compiled against OpenEXR.

Patch / fix

  • openexr openexr 3.0.1
  • openexr Debian 14, Debian 13, Debian 12 2.5.4-2

debian advisories DEBIAN-CVE-2021-23169

  • openexr Alpine 3.24, Alpine 3.23, Alpine 3.22 +7 more 3.1.1-r0

alpine advisories ALPINE-CVE-2021-23169

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-23169 updated cvss 8.8

OpenEXR: Heap-buffer-overflow in Imf_2_5::copyIntoFrameBuffer

  • Red Hat Enterprise Linux 6 OpenEXR, OpenEXR-libs
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 OpenEXR, OpenEXR-libs Red Hat Enterprise Linux 8 OpenEXR, OpenEXR-libs
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 9 openexr, openexr-libs
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.29% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • n/a OpenEXR

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.