CVE-2026-4775

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-03-24. The CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:redhat, epss, ghsa
Trending — 4 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: 0.4%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
29th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

March 24, 2026

Last Modified

October 2, 2026

Advisory Details (5)

Auto-updated Apr 30, 2026
Patch available. Sources: redhat.
generic Patch Available

[SECURITY] [DLA 4536-1] tiff security update

https://lists.debian.org/debian-lts-announce/2026/04/msg00016.html
redhat Patch Available

2450768 – (CVE-2026-4775) CVE-2026-4775 libtiff: libtiff: Arbitrary code execution or denial of service via signed integer overflow in TIFF file processing

Affected: Red Hat Enterprise Linux 10

https://bugzilla.redhat.com/show_bug.cgi?id=2450768
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-4775
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:12271
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:12265

Vendor Advisories for CVE-2026-4775(20)

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

Patch Availability(27)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatlibtiff-main-4.7.1-2.3.hum12026-06-30redhat
redhatlibtiff-main-4.7.1-2.2.hum12026-06-26redhat
redhatrhaiis/vllm-spyre-rhel9:17823529192026-06-25redhat
redhatrhaiis/vllm-cuda-rhel9:17823528472026-06-25redhat
redhatrhaiis/vllm-rocm-rhel9:17823530932026-06-25redhat
redhatrhaiis/model-opt-cuda-rhel9:17823529502026-06-25redhat
redhatlibtiff-0:4.0.3-35.el7_9.22026-06-15redhat
redhatcompat-libtiff3-0:3.9.4-12.el7_9.22026-06-10redhat
redhatrhaiis/model-opt-cuda-rhel9:17806819842026-06-10redhat
redhatcompat-libtiff3-0:3.9.4-13.el8_8.22026-05-26redhat
redhatcompat-libtiff3-0:3.9.4-15.el8_102026-05-26redhat
redhatcompat-libtiff3-0:3.9.4-13.el8_4.22026-05-26redhat
redhatcompat-libtiff3-0:3.9.4-13.el8_6.22026-05-26redhat
redhatlibtiff-0:4.6.0-6.el10_0.32026-05-20redhat
redhatlibtiff-0:4.0.9-18.el8_4.22026-05-20redhat
redhatlibtiff-0:4.4.0-13.el9_6.42026-05-20redhat
redhatlibtiff-0:4.0.9-29.el8_8.22026-05-20redhat
redhatlibtiff-0:4.2.0-3.el9_0.32026-05-20redhat
redhatlibtiff-0:4.0.9-21.el8_6.22026-05-20redhat
redhatlibtiff-0:4.4.0-12.el9_4.52026-05-20redhat
redhatlibtiff-0:4.4.0-8.el9_2.52026-05-20redhat
redhatlibtiff-0:4.4.0-18.el9_82026-05-19redhat
redhatlibtiff-0:4.6.0-8.el10_2.12026-05-19redhat
redhatlibtiff-0:4.0.9-37.el8_102026-05-11redhat
redhatmingw-libtiff-0:4.0.9-4.el8_102026-05-07redhat
redhatlibtiff-0:4.6.0-6.el10_1.32026-04-30redhat
redhatlibtiff-0:4.4.0-15.el9_7.32026-04-30redhat

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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
tiff4.2.0-1 ... 4.2.0-1+deb11u7 (8 versions)
  • every version up to 4.2.0-1+deb11u8: fixed in 4.2.0-1+deb11u8
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
tiff4.5.0-6, 4.5.0-6+deb12u1, 4.5.0-6+deb12u2, 4.5.0-6+deb12u3
  • every version up to 4.5.0-6+deb12u4: fixed in 4.5.0-6+deb12u4
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
tiff4.7.0-3, 4.7.0-3+deb13u1
  • every version up to 4.7.0-3+deb13u2: fixed in 4.7.0-3+deb13u2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
tiff4.7.0-3, 4.7.0-4, 4.7.0-5, 4.7.1-1
  • every version up to 4.7.1-2: fixed in 4.7.1-2
—

Weakness Classification(1)

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

Additional Vendor Advisories

(9)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 22× 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 207 total refreshes for this CVE.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-03 14:25 UTCEPSS rescore
  3. 2026-10-02 02:19 UTCEG score recompute
  4. 2026-10-02 02:19 UTCVendor advisory
  5. 2026-10-02 02:18 UTCGHSA enrichment
  6. 2026-10-01 19:50 UTCEPSS rescore
  7. 2026-09-30 15:03 UTCEPSS rescore
  8. 2026-09-28 13:51 UTCEPSS rescore
  9. 2026-09-27 13:48 UTCEPSS rescore
  10. 2026-09-26 15:59 UTCEPSS rescore
  11. 2026-09-26 00:27 UTCEPSS rescore
  12. 2026-09-23 17:53 UTCEPSS rescore
  13. 2026-09-20 20:16 UTCEPSS rescore
  14. 2026-09-18 19:28 UTCEPSS rescore
  15. 2026-09-16 14:08 UTCEPSS rescore
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-13 16:47 UTCEPSS rescore
  18. 2026-09-11 14:53 UTCEPSS rescore
  19. 2026-09-10 09:35 UTCEPSS rescore
  20. 2026-09-08 22:01 UTCEPSS rescore
  21. 2026-09-07 16:01 UTCEPSS rescore
  22. 2026-09-06 13:47 UTCEPSS rescore
  23. 2026-09-04 05:06 UTCEPSS rescore
  24. 2026-09-02 14:12 UTCEPSS rescore
  25. 2026-09-01 13:54 UTCEPSS rescore
Show 75 more
  1. 2026-09-01 04:40 UTCEPSS rescore
  2. 2026-08-30 19:17 UTCEPSS rescore
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-27 14:25 UTCEPSS rescore
  6. 2026-08-26 14:46 UTCEPSS rescore
  7. 2026-08-25 13:49 UTCEPSS rescore
  8. 2026-08-23 00:19 UTCEPSS rescore
  9. 2026-08-21 23:49 UTCEPSS rescore
  10. 2026-08-20 22:55 UTCEPSS rescore
  11. 2026-08-19 17:04 UTCEPSS rescore
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 10:38 UTCEG score recompute
  16. 2026-08-16 10:38 UTCVendor advisory
  17. 2026-08-16 10:38 UTCGHSA enrichment
  18. 2026-08-16 02:14 UTCEPSS rescore
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-14 19:41 UTCVendor advisory
  21. 2026-08-14 19:41 UTCGHSA enrichment
  22. 2026-08-14 06:51 UTCEG score recompute
  23. 2026-08-14 06:51 UTCVendor advisory
  24. 2026-08-14 06:51 UTCGHSA enrichment
  25. 2026-08-13 22:00 UTCEPSS rescore
  26. 2026-08-12 21:30 UTCEG score recompute
  27. 2026-08-12 21:30 UTCVendor advisory
  28. 2026-08-12 21:30 UTCGHSA enrichment
  29. 2026-08-12 13:51 UTCEPSS rescore
  30. 2026-08-11 21:08 UTCEG score recompute
  31. 2026-08-11 21:08 UTCVendor advisory
  32. 2026-08-11 21:08 UTCGHSA enrichment
  33. 2026-08-11 04:10 UTCEG score recompute
  34. 2026-08-11 04:10 UTCVendor advisory
  35. 2026-08-11 04:10 UTCGHSA enrichment
  36. 2026-08-11 00:00 UTCEPSS rescore
  37. 2026-08-10 06:22 UTCVendor advisory
  38. 2026-08-10 06:22 UTCGHSA enrichment
  39. 2026-08-09 18:18 UTCEG score recompute
  40. 2026-08-09 18:18 UTCVendor advisory
  41. 2026-08-09 18:18 UTCGHSA enrichment
  42. 2026-08-09 13:46 UTCEPSS rescore
  43. 2026-08-09 06:27 UTCEG score recompute
  44. 2026-08-09 06:27 UTCVendor advisory
  45. 2026-08-09 06:27 UTCGHSA enrichment
  46. 2026-08-08 16:37 UTCEPSS rescore
  47. 2026-08-08 04:38 UTCVendor advisory
  48. 2026-08-08 04:38 UTCGHSA enrichment
  49. 2026-08-07 16:47 UTCEG score recompute
  50. 2026-08-07 16:47 UTCVendor advisory
  51. 2026-08-07 16:47 UTCGHSA enrichment
  52. 2026-08-06 19:04 UTCEG score recompute
  53. 2026-08-06 19:04 UTCVendor advisory
  54. 2026-08-06 19:04 UTCGHSA enrichment
  55. 2026-08-06 13:47 UTCEPSS rescore
  56. 2026-08-06 01:11 UTCEG score recompute
  57. 2026-08-06 01:11 UTCVendor advisory
  58. 2026-08-06 01:11 UTCGHSA enrichment
  59. 2026-08-05 19:17 UTCEPSS rescore
  60. 2026-08-04 15:10 UTCEPSS rescore
  61. 2026-08-04 10:39 UTCEPSS rescore
  62. 2026-08-03 23:55 UTCEG score recompute
  63. 2026-08-03 23:55 UTCVendor advisory
  64. 2026-08-03 23:55 UTCGHSA enrichment
  65. 2026-08-03 10:36 UTCEPSS rescore
  66. 2026-08-02 15:45 UTCEG score recompute
  67. 2026-08-02 15:45 UTCVendor advisory
  68. 2026-08-02 15:45 UTCGHSA enrichment
  69. 2026-08-02 02:27 UTCEPSS rescore
  70. 2026-08-01 04:16 UTCEPSS rescore
  71. 2026-07-30 16:28 UTCEPSS rescore
  72. 2026-07-30 01:30 UTCEPSS rescore
  73. 2026-07-28 15:37 UTCEPSS rescore
  74. 2026-07-26 14:54 UTCEPSS rescore
  75. 2026-07-25 14:18 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-4775?
CVE-2026-4775 is a high vulnerability published on March 24, 2026. A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations,…
When was CVE-2026-4775 disclosed?
CVE-2026-4775 was first published on March 24, 2026, with the most recent update on October 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4775 actively exploited?
CVE-2026-4775 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (29th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-4775?
CVE-2026-4775 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-4775?
A fix for CVE-2026-4775 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-4775 are linked in the Vendor Advisories panel on this page.

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