CVE-2026-67301

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-01. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

FreeRDP before 3.29.0 contains out-of-bounds read vulnerabilities in the async update message proxy for the PolygonSC and PolygonCB primary drawing orders. When AsyncUpdate is enabled (e.g., xfreerdp /async-update), update_message_PolygonSC() and update_message_PolygonCB() allocate a fresh points array but copy point data from the address of the order structure instead of from polygonSC->points / polygonCB->points, resulting in a client-side out-of-bounds read. A malicious or compromised RDP server sending crafted PolygonSC/PolygonCB update orders can trigger memory disclosure or a client crash.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: 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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

August 1, 2026

Last Modified

September 8, 2026

Advisory Details (3)

Auto-updated Aug 1, 2026
Patch available. Sources: github, github_commit.
generic

FreeRDP before 3.29.0 Out-of-bounds Read via Polygon async message-proxy | Advisories | VulnCheck

https://www.vulncheck.com/advisories/freerdp-before-out-of-bounds-read-via-polygon-async-message-proxy
github_commit

commit 5370fb26fbf0 (FreeRDP/FreeRDP)

Fix landed in FreeRDP/FreeRDP commit 5370fb26fbf0 — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/commit/5370fb26fbf034ecd11d3026b6ad639b5fff493f
github Patch Available

FreeRDP Polygon async message-proxy out-of-bounds read · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vxp3-7g6q-rq2w

Vendor Advisories for CVE-2026-67301(8)

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

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatfreerdp-2:3.10.3-3.el10_0.162026-09-17redhat
redhatfreerdp-0:2.1.1-5.el7_9.122026-09-17redhat
redhatfreerdp-2:2.2.0-7.el8_6.122026-09-10redhat
redhatfreerdp-2:2.2.0-12.el8_8.112026-09-10redhat
redhatfreerdp-2:2.2.0-14.el8_4.32026-09-09redhat
redhatfreerdp-2:2.11.7-12.el8_102026-09-02redhat
redhatfreerdp-2:2.11.7-7.el9_8.62026-08-31redhat
redhatfreerdp-2:3.10.3-12.el10_2.102026-08-31redhat

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 rangeFixed inDependents
freerdp22.10.0+dfsg1-1 ... 2.9.0+dfsg1-1~bpo11+1 (32 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
freerdp22.10.0+dfsg1-1 ... 2.11.7+dfsg1-6~deb12u1 (13 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
freerdp33.15.0+dfsg-2.1 ... 3.31.0+dfsg-1 (44 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
freerdp33.15.0+dfsg-2.1 ... 3.28.0+dfsg-2 (37 versions)3.29.0+dfsg-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 31× in last 7d / 122× 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 200 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-67301?
CVE-2026-67301 is a high vulnerability published on August 1, 2026. FreeRDP before 3.29.0 contains out-of-bounds read vulnerabilities in the async update message proxy for the PolygonSC and PolygonCB primary drawing orders. When AsyncUpdate is enabled (e.g., xfreerdp /async-update), updatemessagePolygonSC() and updatemessagePolygonCB() allocate a fresh points array…
When was CVE-2026-67301 disclosed?
CVE-2026-67301 was first published in the National Vulnerability Database on August 1, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67301 actively exploited?
CVE-2026-67301 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 70.9% of all scored CVEs.
What is the CVSS score of CVE-2026-67301?
CVE-2026-67301 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-67301?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67301, 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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