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.
CVE-2026-67299
“—” beside the score: it is equal to the CVSS score beside it.
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.
Also known asEUVD-2026-51820 (ENISA EUVD) · GHSA-jq8c-588g-4wgj (GitHub Security Advisories)Source: ENISA EUVD
- CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 65EG Risk 65/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity75% × 45%Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.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
- 34th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track 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). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
August 1, 2026
Last Modified
September 8, 2026
Advisory Details (3)
Auto-updated Aug 1, 2026FreeRDP 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-messagecommit 5370fb26fbf0 (FreeRDP/FreeRDP)
Fix landed in FreeRDP/FreeRDP commit 5370fb26fbf0 — awaiting tagged release
https://github.com/FreeRDP/FreeRDP/commit/5370fb26fbf034ecd11d3026b6ad639b5fff493fFreeRDP WindowIcon async message-proxy use-after-free · Advisory · FreeRDP/FreeRDP · GitHub
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-34hq-hwjw-q8v3Vendor 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.
- RHSA-2026:61251Red Hat Product SecurityHigh
Red Hat Security Advisory: freerdp security update
- RHSA-2026:61250Red Hat Product SecurityHigh
Red Hat Security Advisory: freerdp security update
- RHSA-2026:60173Red Hat Product SecurityHigh
Red Hat Security Advisory: freerdp security update
- RHSA-2026:58713Red Hat Product SecurityHigh
Red Hat Security Advisory: freerdp security update
- RHSA-2026:58710Red Hat Product SecurityHigh
Red Hat Security Advisory: freerdp security update
- RHSA-2026:58712Red Hat Product SecurityHigh
Red Hat Security Advisory: freerdp security update
- RHSA-2026:58711Red Hat Product SecurityHigh
Red Hat Security Advisory: freerdp security update
- RHSA-2026:54487Red Hat Product SecurityHigh
Red Hat Security Advisory: freerdp security update
- +3 more
Patch Availability(11)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | freerdp-0:2.1.1-5.el7_9.11 | 2026-09-02 | redhat |
| redhat | freerdp-2:2.2.0-7.el8_6.11 | 2026-08-31 | redhat |
| redhat | freerdp-2:2.2.0-12.el8_8.10 | 2026-08-31 | redhat |
| redhat | freerdp-2:2.2.0-14.el8_4.2 | 2026-08-26 | redhat |
| redhat | freerdp-2:2.11.7-1.el9_6.12 | 2026-08-24 | redhat |
| redhat | freerdp-2:2.11.2-1.el9_4.10 | 2026-08-24 | redhat |
| redhat | freerdp-2:3.10.3-3.el10_0.11 | 2026-08-24 | redhat |
| redhat | freerdp-2:2.4.1-6.el9_2.11 | 2026-08-24 | redhat |
| redhat | freerdp-2:2.11.7-11.el8_10 | 2026-08-13 | redhat |
| redhat | freerdp-2:2.11.7-7.el9_8.5 | 2026-08-13 | redhat |
| redhat | freerdp-2:3.10.3-12.el10_2.8 | 2026-08-13 | redhat |
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)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| freerdp2 | 2.10.0+dfsg1-1 ... 2.9.0+dfsg1-1~bpo11+1 (32 versions) |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| freerdp2 | 2.10.0+dfsg1-1 ... 2.11.7+dfsg1-6~deb12u1 (13 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| freerdp3 | 3.15.0+dfsg-2.1 ... 3.32.1+dfsg-1~bpo13+1 (49 versions) |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| freerdp3 | 3.15.0+dfsg-2.1 ... 3.28.0+dfsg-2 (37 versions) |
| — |
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 10× in last 7d / 57× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 100 of 340 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 240 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-28 06:37 UTCEG score recompute
- 2026-10-28 06:37 UTCVendor advisory
- 2026-10-28 06:37 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-25 14:10 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-20 18:39 UTCEG score recompute
- 2026-10-20 18:39 UTCVendor advisory
- 2026-10-20 18:39 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-18 03:20 UTCEG score recompute
- 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
Show 75 moreShow fewer
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-13 10:49 UTCEG score recompute
- 2026-10-13 10:49 UTCVendor advisory
- 2026-10-13 10:49 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-12 15:45 UTCEG score recompute
- 2026-10-11 19:30 UTCEG score recompute
- 2026-10-11 16:46 UTCEG score recompute
- 2026-10-11 14:07 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-06 23:48 UTCEG score recompute
- 2026-10-06 23:48 UTCVendor advisory
- 2026-10-06 23:48 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-05 19:52 UTCEG score recompute
- 2026-10-05 19:52 UTCVendor advisory
- 2026-10-05 19:52 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-04 23:48 UTCEG score recompute
- 2026-10-04 23:48 UTCVendor advisory
- 2026-10-04 23:48 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-04 06:25 UTCEG score recompute
- 2026-10-04 06:25 UTCVendor advisory
- 2026-10-04 06:25 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-03 02:43 UTCEG score recompute
- 2026-10-03 02:43 UTCVendor advisory
- 2026-10-03 02:43 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-02 10:28 UTCEG score recompute
- 2026-10-02 10:28 UTCVendor advisory
- 2026-10-02 10:28 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-01 14:40 UTCVendor advisory
- 2026-10-01 14:39 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-10-01 02:42 UTCEG score recompute
- 2026-10-01 02:42 UTCVendor advisory
- 2026-10-01 02:42 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-09-29 06:46 UTCEG score recompute
- 2026-09-29 06:46 UTCVendor advisory
- 2026-09-29 06:46 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-28 06:19 UTCVendor advisory
- 2026-09-28 06:19 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-27 18:21 UTCEG score recompute
- 2026-09-27 18:21 UTCVendor advisory
- 2026-09-27 18:21 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-25 04:50 UTCEG score recompute
- 2026-09-25 04:50 UTCVendor advisory
- 2026-09-25 04:50 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-24 09:36 UTCVendor advisory
- 2026-09-24 09:36 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-23 21:28 UTCEG score recompute
- 2026-09-23 21:28 UTCVendor advisory
- 2026-09-23 21:28 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-09-23 09:30 UTCVendor advisory
- 2026-09-23 09:30 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-22 21:31 UTCEG score recompute
- 2026-09-22 21:31 UTCVendor advisory
- 2026-09-22 21:31 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-22 06:57 UTCEG score recompute
- 2026-09-22 06:57 UTCVendor advisory
- 2026-09-22 06:57 UTCGHSA enrichmentGHSA-jq8c-588g-4wgj · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-09-20 20:59 UTCEG score recompute
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:13:freerdp3
- CVE-2026-67289NVD 7.5EG 9.8CRITICAL
- CVE-2026-66402EG 9.8CRITICAL
- CVE-2026-64620NVD 9.1EG 9.8CRITICAL
- CVE-2026-57156EG 9.8CRITICAL
- CVE-2026-45700EG 9.8EPSS p93CRITICAL
- CVE-2026-31806EG 9.8CRITICAL
- CVE-2026-31883EG 9.8CRITICAL
- CVE-2026-25959EG 9.8CRITICAL
- CVE-2026-25955EG 9.8CRITICAL
- CVE-2026-25953EG 9.8CRITICAL
Same vendor
5 shownredhat:RHSA-2026:54485 · redhat:RHSA-2026:54486
Frequently asked(5)
What is CVE-2026-67299?
When was CVE-2026-67299 made public?
Is CVE-2026-67299 actively exploited?
What is the CVSS score of CVE-2026-67299?
How do I remediate CVE-2026-67299?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-67299
Is Your Infrastructure Affected by CVE-2026-67299?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.