CVE-2026-85090

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2026-09-03. A secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.4Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

FreeRDP before 3.31.0 contains a heap out-of-bounds read vulnerability in the general_ChromaV1ToYUV444 function during AVC444 chroma plane reconstruction. A malicious RDP server can craft a RFX_AVC444_BITMAP_STREAM with specific frame geometry to trigger an out-of-bounds memory read past the allocated luma plane.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100CISA 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
Severity54% × 45%
Exploitation40% × 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
0.3%
EPSS %ILE
18th
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 public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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

September 3, 2026

Last Modified

September 9, 2026

Advisory Details (6)

Auto-updated Sep 3, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
generic

FreeRDP before 3.31.0 Heap Out-of-Bounds Read via AVC444 | Advisories | VulnCheck

https://www.vulncheck.com/advisories/freerdp-before-3.31.0-heap-out-of-bounds-read-via-avc444
generic

GitHub - FreeRDP/FreeRDP: FreeRDP is a free remote desktop protocol library and clients · GitHub

https://github.com/FreeRDP/FreeRDP
generic

FreeRDP/libfreerdp/primitives/prim_YUV.c at 3.30.0 · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/blob/3.30.0/libfreerdp/primitives/prim_YUV.c
github_release Patch Available

3.31.0

Patch available: FreeRDP/FreeRDP 3.31.0

https://github.com/FreeRDP/FreeRDP/releases/tag/3.31.0
github_commit

commit d0a481cb74ab (FreeRDP/FreeRDP)

Fix landed in FreeRDP/FreeRDP commit d0a481cb74ab — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/commit/d0a481cb74ab57bca24791fe11b89464a332d3f1
githubMentions a patch (unverified)🟡 PoC Available

Client-side heap OOB read in FreeRDP AVC444 chroma combine · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-57h7-vw2f-2f9x

Vendor Advisories for CVE-2026-85090(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
freerdp22.10.0+dfsg1-1 ... 2.11.7+dfsg1-6~deb12u1 (13 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
freerdp33.15.0+dfsg-2.1 ... 3.32.1+dfsg-1~bpo13+1 (49 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
freerdp33.15.0+dfsg-2.1 ... 3.30.0+dfsg-1~bpo13+1 (40 versions)
  • every version up to 3.31.0+dfsg-1: fixed in 3.31.0+dfsg-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 85× 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 108 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-85090?
CVE-2026-85090 is a medium vulnerability published on September 3, 2026. FreeRDP before 3.31.0 contains a heap out-of-bounds read vulnerability in the generalChromaV1ToYUV444 function during AVC444 chroma plane reconstruction. A malicious RDP server can craft a RFXAVC444BITMAPSTREAM with specific frame geometry to trigger an out-of-bounds memory read past the allocated…
When was CVE-2026-85090 disclosed?
CVE-2026-85090 was first published on September 3, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85090 actively exploited?
CVE-2026-85090 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (18th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-85090?
CVE-2026-85090 has a CVSS base score of 5.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-85090?
A fix for CVE-2026-85090 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-85090 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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