CVE-2026-21673

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 93% 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
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 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 have overflows and underflows in CIccXmlArrayType::ParseTextCountNum(). This vulnerability affects users of the iccDEV library who process ICC color profiles. This issue is fixed in version 2.3.1.1.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

January 6, 2026

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Aug 6, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Integer Overflow/Underflow in CIccXmlArrayType::ParseTextCountNum() · Advisory · InternationalColorConsortium/iccDEV · GitHub

https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-g66g-f82c-vgm6
generic

Undefined behavior in IccUtilXml.cpp:1018 · Issue #243 · InternationalColorConsortium/iccDEV · GitHub

https://github.com/InternationalColorConsortium/iccDEV/issues/243
github_commit Patch Available

commit 32740802ee14 (InternationalColorConsortium/iccDEV)

Patch available: InternationalColorConsortium/iccDEV v2.3.2.2 (contains commit 32740802ee14)

https://github.com/InternationalColorConsortium/iccDEV/commit/32740802ee14418bd14c429d7e2f142d92cd5c4f

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 25× 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 145 total refreshes for this CVE.

  1. 2026-09-19 07:06 UTCOSV refresh
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-16 14:07 UTCEPSS rescore
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  1. 2026-08-19 17:03 UTCEPSS rescore
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  7. 2026-08-14 16:09 UTCEG score recompute
  8. 2026-08-12 13:50 UTCEPSS rescore
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  11. 2026-08-09 21:50 UTCEG score recompute
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  32. 2026-07-23 11:19 UTCOSV refresh
  33. 2026-07-23 03:06 UTCEG score recompute
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  60. 2026-07-06 06:32 UTCOSV refresh
  61. 2026-07-05 02:30 UTCEPSS rescore
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  66. 2026-06-30 23:22 UTCEPSS rescore
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  71. 2026-06-27 03:08 UTCEPSS rescore
  72. 2026-06-25 13:49 UTCEPSS rescore
  73. 2026-06-24 14:05 UTCEPSS rescore
  74. 2026-06-23 21:32 UTCEPSS rescore
  75. 2026-06-22 14:25 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-21673?
CVE-2026-21673 is a high 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 have overflows and underflows in CIccXmlArrayType::ParseTextCountNum(). This vulnerability affects users of the iccDEV library who process ICC color profiles. This issue is fixed in…
When was CVE-2026-21673 disclosed?
CVE-2026-21673 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-2026-21673 actively exploited?
CVE-2026-21673 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 90.7% of all scored CVEs.
What is the CVSS score of CVE-2026-21673?
CVE-2026-21673 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-21673?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21673, 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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