CVE-2021-23169

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
82%
KEV
Not listed

Published

June 8, 2021

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Aug 6, 2026
Patch available. Sources: redhat.
generic

OpenEXR: Multiple Vulnerabilities (GLSA 202210-31) — Gentoo security

https://security.gentoo.org/glsa/202210-31
generic

[SECURITY] Fedora 33 Update: mingw-OpenEXR-2.4.1-4.fc33 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BXFLD4ZAXKAIWO6ZPBCQEEDZB5IG676K/
generic

[SECURITY] Fedora 34 Update: mingw-openexr-2.5.5-2.fc34 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4KYNJSMVA6YJY5NMKDZ5SAISKZG2KCKC/
redhat Patch Available

1947612 – (CVE-2021-23169) CVE-2021-23169 OpenEXR: Heap-buffer-overflow in Imf_2_5::copyIntoFrameBuffer

https://bugzilla.redhat.com/show_bug.cgi?id=1947612

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
openexr—2.5.4-2—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
openexr—2.5.4-2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
openexr—2.5.4-2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
openexr—2.5.4-2—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 162 total refreshes for this CVE.

  1. 2026-09-24 14:00 UTCEPSS rescore
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  1. 2026-09-01 03:32 UTCEPSS rescore
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  11. 2026-08-20 01:45 UTCOSV refresh
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  73. 2026-06-30 23:20 UTCEPSS rescore
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Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2021-23169?
CVE-2021-23169 is a high vulnerability published on June 8, 2021. 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.
When was CVE-2021-23169 disclosed?
CVE-2021-23169 was first published in the National Vulnerability Database on June 8, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-23169 actively exploited?
CVE-2021-23169 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 17.5% of all scored CVEs.
What is the CVSS score of CVE-2021-23169?
CVE-2021-23169 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2021-23169?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-23169, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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