CVE-2026-21675

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 68% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below contain a Use After Free vulnerability in the CIccXform::Create() function, where it deletes the hint. This issue is fixed in version 2.3.1.1.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

January 6, 2026

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Sep 21, 2026
Patch available. Sources: github_commit, github.
generic

Known Defect | UAF | IccCmm.cpp:823 · Issue #182 · InternationalColorConsortium/iccDEV · GitHub

https://github.com/InternationalColorConsortium/iccDEV/issues/182
github Patch Available

Use-After-Free in CIccXform::Create() via improper hint manager object deletion · Advisory · InternationalColorConsortium/iccDEV · GitHub

https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-wcwx-794g-g78f
github_commit

commit 510baf58fa48 (InternationalColorConsortium/iccDEV)

Fix landed in InternationalColorConsortium/iccDEV commit 510baf58fa48 — awaiting tagged release

https://github.com/InternationalColorConsortium/iccDEV/commit/510baf58fa48e00ebbb5dd577f0db4af8876bb31

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 24× 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 146 total refreshes for this CVE.

  1. 2026-09-20 20:15 UTCEPSS rescore
  2. 2026-09-19 19:00 UTCOSV refresh
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  73. 2026-06-28 14:07 UTCEPSS rescore
  74. 2026-06-28 04:56 UTCEPSS rescore
  75. 2026-06-28 04:56 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-21675?
CVE-2026-21675 is a critical vulnerability published on January 6, 2026. iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1 and below contain a Use After Free vulnerability in the CIccXform::Create() function, where it deletes the hint. This issue is fixed in version 2.3.1.1.
When was CVE-2026-21675 disclosed?
CVE-2026-21675 was first published in the National Vulnerability Database on January 6, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21675 actively exploited?
CVE-2026-21675 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 62.3% of all scored CVEs.
What is the CVSS score of CVE-2026-21675?
CVE-2026-21675 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-21675?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21675, 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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