CVE-2026-52490

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-24. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 6 sources updated this weekElevated
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

A fix is available — apply it.

An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the process_command_opts() function in tools/tiffcrop.c

CVSS v3
9.8
EG Score
9.8(high)
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
33%
KEV
Not listed

Published

August 24, 2026

Last Modified

August 25, 2026

Advisory Details (2)

Auto-updated Aug 25, 2026
No patch confirmed yet.
generic

tiffcrop: -S cols×rows check can be bypassed via unsigned 32-bit overflow (#846) · Issues · libtiff / libtiff · GitLab

https://gitlab.com/libtiff/libtiff/-/work_items/846
generic

CVE-2026-52490.txt · GitHub

https://gist.github.com/okyfh/122c2d72e991a78c8af80a3af3be8671

Vendor Advisories for CVE-2026-52490(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatlibtiff-main-4.7.2-2.hum12026-08-11redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 53× in last 7d / 53× 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.

  1. 2026-08-30 06:02 UTCVendor advisory
  2. 2026-08-30 06:02 UTCGHSA enrichment
  3. 2026-08-30 01:53 UTCEG score recompute
  4. 2026-08-30 01:53 UTCVendor advisory
  5. 2026-08-30 01:53 UTCGHSA enrichment
  6. 2026-08-30 01:22 UTCEPSS rescore
  7. 2026-08-29 21:45 UTCVendor advisory
  8. 2026-08-29 21:45 UTCGHSA enrichment
  9. 2026-08-29 17:36 UTCVendor advisory
  10. 2026-08-29 17:36 UTCGHSA enrichment
  11. 2026-08-29 13:04 UTCVendor advisory
  12. 2026-08-29 13:04 UTCGHSA enrichment
  13. 2026-08-29 08:52 UTCVendor advisory
  14. 2026-08-29 08:52 UTCGHSA enrichment
  15. 2026-08-29 04:41 UTCVendor advisory
  16. 2026-08-29 04:40 UTCGHSA enrichment
  17. 2026-08-29 00:29 UTCEG score recompute
  18. 2026-08-29 00:29 UTCVendor advisory
  19. 2026-08-29 00:29 UTCGHSA enrichment
  20. 2026-08-28 21:41 UTCEPSS rescore
  21. 2026-08-28 16:29 UTCVendor advisory
  22. 2026-08-28 16:29 UTCGHSA enrichment
  23. 2026-08-28 11:50 UTCVendor advisory
  24. 2026-08-28 11:50 UTCGHSA enrichment
  25. 2026-08-28 07:42 UTCVendor advisory
Show 28 more
  1. 2026-08-28 07:42 UTCGHSA enrichment
  2. 2026-08-28 03:27 UTCVendor advisory
  3. 2026-08-28 03:27 UTCGHSA enrichment
  4. 2026-08-27 23:19 UTCGHSA enrichment
  5. 2026-08-27 19:11 UTCGHSA enrichment
  6. 2026-08-27 15:00 UTCEG score recompute
  7. 2026-08-27 15:00 UTCGHSA enrichment
  8. 2026-08-27 14:25 UTCEPSS rescore
  9. 2026-08-27 10:51 UTCGHSA enrichment
  10. 2026-08-27 06:41 UTCGHSA enrichment
  11. 2026-08-27 02:05 UTCGHSA enrichment
  12. 2026-08-26 21:57 UTCGHSA enrichment
  13. 2026-08-26 17:49 UTCEG score recompute
  14. 2026-08-26 17:49 UTCGHSA enrichment
  15. 2026-08-26 14:46 UTCEPSS rescore
  16. 2026-08-26 13:10 UTCGHSA enrichment
  17. 2026-08-26 09:00 UTCGHSA enrichment
  18. 2026-08-26 04:52 UTCGHSA enrichment
  19. 2026-08-26 00:43 UTCEG score recompute
  20. 2026-08-26 00:43 UTCGHSA enrichment
  21. 2026-08-25 20:35 UTCGHSA enrichment
  22. 2026-08-25 19:50 UTCEG score recompute▲ 9.80
  23. 2026-08-25 19:50 UTCGHSA enrichment
  24. 2026-08-25 19:49 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  25. 2026-08-25 13:49 UTCEPSS rescore
  26. 2026-08-24 21:25 UTCNVD update
  27. 2026-08-24 20:56 UTCEG score recompute
  28. 2026-08-24 20:55 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-52490?
CVE-2026-52490 is a critical vulnerability published on August 24, 2026. An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the processcommandopts() function in tools/tiffcrop.c
When was CVE-2026-52490 disclosed?
CVE-2026-52490 was first published in the National Vulnerability Database on August 24, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52490 actively exploited?
CVE-2026-52490 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 66.6% of all scored CVEs.
What is the CVSS score of CVE-2026-52490?
CVE-2026-52490 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-52490?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52490, 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.

Dependency Blast Radius

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