CVE-2026-67299

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 — 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: 0.4%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

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
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100CISA 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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
31st
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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

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 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(11)

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

Patch Availability(11)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatfreerdp-0:2.1.1-5.el7_9.112026-09-02redhat
redhatfreerdp-2:2.2.0-7.el8_6.112026-08-31redhat
redhatfreerdp-2:2.2.0-12.el8_8.102026-08-31redhat
redhatfreerdp-2:2.2.0-14.el8_4.22026-08-26redhat
redhatfreerdp-2:3.10.3-3.el10_0.112026-08-24redhat
redhatfreerdp-2:2.4.1-6.el9_2.112026-08-24redhat
redhatfreerdp-2:2.11.2-1.el9_4.102026-08-24redhat
redhatfreerdp-2:2.11.7-1.el9_6.122026-08-24redhat
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 rangeFix by version rangeDependents
freerdp22.10.0+dfsg1-1 ... 2.9.0+dfsg1-1~bpo11+1 (32 versions)
  • every version on: no fix on record
—
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 ... 3.28.0+dfsg-2 (37 versions)
  • every version up to 3.29.0+dfsg-1: fixed in 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 26× in last 7d / 124× 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 291 total refreshes for this CVE.

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

Related CVEs(same product + 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 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-2026-67299 actively exploited?
CVE-2026-67299 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-67299?
CVE-2026-67299 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-67299?
A fix for CVE-2026-67299 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-67299 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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