CVE-2026-67299

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH 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 — 4 sources updated 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 a client-side heap use-after-free in the async update message proxy for WINDOW_ICON_ORDER when AsyncUpdate is enabled (e.g. xfreerdp /async-update). In update_message_WindowIcon() a shallow CopyMemory() overwrites a freshly allocated lParam->iconInfo with the parser-owned windowIcon->iconInfo pointer. After the parser callback returns, update_recv_window_info_order() frees window_icon.iconInfo, but the queued async message still retains and later dispatches that stale pointer. A malicious or compromised RDP server sending a crafted RAIL Window Alternate Secondary Order with WINDOW_ORDER_ICON can trigger use-after-free, leading to memory corruption and client crash.

CVSS v3
7.5
EG Score
7.5(high)
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
26%
KEV
Not listed

Published

August 1, 2026

Last Modified

August 3, 2026

Advisory Details (3)

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

FreeRDP before 3.29.0 Use-After-Free via WindowIcon async message | Advisories | VulnCheck

https://www.vulncheck.com/advisories/freerdp-before-use-after-free-via-windowicon-async-message
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 WindowIcon async message-proxy use-after-free · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-34hq-hwjw-q8v3

Vendor Advisories for CVE-2026-67299(1)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatfreerdp-2:2.11.7-11.el8_102026-08-13redhat
redhatfreerdp-2:3.10.3-12.el10_2.82026-08-13redhat
redhatfreerdp-2:2.11.7-7.el9_8.52026-08-13redhat

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 ... 3.30.0+dfsg-1~bpo13+1 (43 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.

All Vendor Advisories

(3)

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 39× in last 7d / 92× 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. 2026-08-20 07:40 UTCVendor advisory
  2. 2026-08-20 07:40 UTCGHSA enrichment
  3. 2026-08-19 19:42 UTCEG score recompute
  4. 2026-08-19 19:42 UTCVendor advisory
  5. 2026-08-19 19:42 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 07:43 UTCVendor advisory
  8. 2026-08-19 07:43 UTCGHSA enrichment
  9. 2026-08-18 19:45 UTCEG score recompute
  10. 2026-08-18 19:45 UTCVendor advisory
  11. 2026-08-18 19:45 UTCGHSA enrichment
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-18 07:46 UTCVendor advisory
  14. 2026-08-18 07:46 UTCGHSA enrichment
  15. 2026-08-17 19:38 UTCEG score recompute
  16. 2026-08-17 19:38 UTCVendor advisory
  17. 2026-08-17 19:38 UTCGHSA enrichment
  18. 2026-08-17 13:47 UTCEPSS rescore
  19. 2026-08-17 05:46 UTCVendor advisory
  20. 2026-08-17 05:46 UTCGHSA enrichment
  21. 2026-08-16 17:15 UTCEG score recompute
  22. 2026-08-16 17:15 UTCVendor advisory
  23. 2026-08-16 17:15 UTCGHSA enrichment
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 05:16 UTCEG score recompute
Show 67 more
  1. 2026-08-16 05:16 UTCVendor advisory
  2. 2026-08-16 05:16 UTCGHSA enrichment
  3. 2026-08-15 17:19 UTCVendor advisory
  4. 2026-08-15 17:19 UTCGHSA enrichment
  5. 2026-08-15 05:21 UTCEG score recompute
  6. 2026-08-15 05:21 UTCVendor advisory
  7. 2026-08-15 05:21 UTCGHSA enrichment
  8. 2026-08-15 01:30 UTCEPSS rescore
  9. 2026-08-14 17:22 UTCVendor advisory
  10. 2026-08-14 17:22 UTCGHSA enrichment
  11. 2026-08-14 05:12 UTCEG score recompute
  12. 2026-08-14 05:12 UTCVendor advisory
  13. 2026-08-14 05:12 UTCGHSA enrichment
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-13 17:14 UTCVendor advisory
  16. 2026-08-13 17:14 UTCGHSA enrichment
  17. 2026-08-13 05:16 UTCGHSA enrichment
  18. 2026-08-12 17:19 UTCEG score recompute
  19. 2026-08-12 17:19 UTCGHSA enrichment
  20. 2026-08-12 13:51 UTCEPSS rescore
  21. 2026-08-12 05:21 UTCGHSA enrichment
  22. 2026-08-11 17:23 UTCEG score recompute
  23. 2026-08-11 17:23 UTCGHSA enrichment
  24. 2026-08-11 05:14 UTCEG score recompute
  25. 2026-08-11 05:14 UTCGHSA enrichment
  26. 2026-08-11 00:00 UTCEPSS rescore
  27. 2026-08-10 17:16 UTCGHSA enrichment
  28. 2026-08-10 05:18 UTCGHSA enrichment
  29. 2026-08-09 17:20 UTCEG score recompute
  30. 2026-08-09 17:20 UTCGHSA enrichment
  31. 2026-08-09 13:47 UTCEPSS rescore
  32. 2026-08-09 05:23 UTCGHSA enrichment
  33. 2026-08-08 17:25 UTCEG score recompute
  34. 2026-08-08 17:25 UTCGHSA enrichment
  35. 2026-08-08 16:37 UTCEPSS rescore
  36. 2026-08-08 05:27 UTCGHSA enrichment
  37. 2026-08-07 17:29 UTCEG score recompute
  38. 2026-08-07 17:29 UTCGHSA enrichment
  39. 2026-08-07 05:31 UTCGHSA enrichment
  40. 2026-08-06 17:33 UTCEG score recompute
  41. 2026-08-06 17:33 UTCGHSA enrichment
  42. 2026-08-06 13:47 UTCEPSS rescore
  43. 2026-08-06 05:35 UTCEG score recompute
  44. 2026-08-06 05:35 UTCGHSA enrichment
  45. 2026-08-05 19:17 UTCEPSS rescore
  46. 2026-08-05 19:17 UTCEPSS rescore
  47. 2026-08-05 17:37 UTCGHSA enrichment
  48. 2026-08-05 05:39 UTCGHSA enrichment
  49. 2026-08-04 17:38 UTCEG score recompute
  50. 2026-08-04 17:37 UTCGHSA enrichment
  51. 2026-08-04 15:10 UTCEPSS rescore
  52. 2026-08-04 10:39 UTCEPSS rescore
  53. 2026-08-04 05:38 UTCGHSA enrichment
  54. 2026-08-03 17:40 UTCEG score recompute
  55. 2026-08-03 17:40 UTCGHSA enrichment
  56. 2026-08-03 16:19 UTCEG score recompute
  57. 2026-08-03 16:19 UTCGHSA enrichment
  58. 2026-08-03 13:12 UTCEG score recompute
  59. 2026-08-03 13:11 UTCGHSA enrichment
  60. 2026-08-03 10:36 UTCEPSS rescore
  61. 2026-08-03 01:12 UTCGHSA enrichment
  62. 2026-08-02 13:14 UTCGHSA enrichment
  63. 2026-08-02 01:16 UTCEG score recompute
  64. 2026-08-02 01:16 UTCGHSA enrichment
  65. 2026-08-01 13:18 UTCEG score recompute
  66. 2026-08-01 12:43 UTCEG score recompute
  67. 2026-08-01 12:42 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-67299?
CVE-2026-67299 is a high vulnerability published on August 1, 2026. FreeRDP before 3.29.0 contains a client-side heap use-after-free in the async update message proxy for WINDOWICONORDER when AsyncUpdate is enabled (e.g. xfreerdp /async-update). In updatemessageWindowIcon() a shallow CopyMemory() overwrites a freshly allocated lParam->iconInfo with the parser-owned…
When was CVE-2026-67299 disclosed?
CVE-2026-67299 was first published in the National Vulnerability Database on August 1, 2026, with the most recent update on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67299 actively exploited?
CVE-2026-67299 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 74.1% of all scored CVEs.
What is the CVSS score of CVE-2026-67299?
CVE-2026-67299 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-67299?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67299, 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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