CVE-2026-52492

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-24. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.8; sources differ by 0.0.

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

A fix is available — apply it.

An integer overflow in the libtiff rgb2ycbcr utility's cvtRaster() function when computing strip buffer sizes can result in an undersized heap allocation and subsequent heap-based buffer overflow during YCbCr conversion of a crafted TIFF image

CVSS v3
7.8
EG Score
7.8(high)
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
3%
KEV
Not listed

Published

August 24, 2026

Last Modified

August 27, 2026

Advisory Details (2)

Auto-updated Aug 27, 2026
No patch confirmed yet.
generic

CVE-2026-52492.txt · GitHub

https://gist.github.com/okyfh/fbc5a37cade358361d80f6a498560cfa
generic

Add -Wconversion to extra-warnings (94affc5c) · Commits · libtiff / libtiff · GitLab

https://gitlab.com/libtiff/libtiff/-/commit/94affc5cf54111312f9891eb77accb93eebc28d7

Vendor Advisories for CVE-2026-52492(2)

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.

Data Freshness Timeline

(refreshed 23× in last 7d / 23× 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 01:32 UTCEG score recompute
  2. 2026-08-30 01:32 UTCVendor advisory
  3. 2026-08-30 01:32 UTCGHSA enrichment
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-29 13:04 UTCVendor advisory
  6. 2026-08-29 13:04 UTCGHSA enrichment
  7. 2026-08-29 00:29 UTCEG score recompute
  8. 2026-08-29 00:29 UTCVendor advisory
  9. 2026-08-29 00:29 UTCGHSA enrichment
  10. 2026-08-28 21:41 UTCEPSS rescore
  11. 2026-08-28 09:00 UTCEG score recompute
  12. 2026-08-28 09:00 UTCVendor advisory
  13. 2026-08-28 09:00 UTCGHSA enrichment
  14. 2026-08-27 20:28 UTCGHSA enrichment
  15. 2026-08-27 20:17 UTCEG score recompute▲ 7.80
  16. 2026-08-27 20:17 UTCGHSA enrichment
  17. 2026-08-27 20:13 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  18. 2026-08-27 14:25 UTCEPSS rescore
  19. 2026-08-26 14:46 UTCEPSS rescore
  20. 2026-08-25 13:49 UTCEPSS rescore
  21. 2026-08-24 21:25 UTCNVD update
  22. 2026-08-24 20:36 UTCEG score recompute
  23. 2026-08-24 20:36 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-52492?
CVE-2026-52492 is a high vulnerability published on August 24, 2026. An integer overflow in the libtiff rgb2ycbcr utility's cvtRaster() function when computing strip buffer sizes can result in an undersized heap allocation and subsequent heap-based buffer overflow during YCbCr conversion of a crafted TIFF image
When was CVE-2026-52492 disclosed?
CVE-2026-52492 was first published in the National Vulnerability Database on August 24, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52492 actively exploited?
CVE-2026-52492 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 97.1% of all scored CVEs.
What is the CVSS score of CVE-2026-52492?
CVE-2026-52492 has a CVSS v3.1 base score of 7.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-52492?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52492, 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

Explore the affected products and dependency analysis for CVE-2026-52492

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