VulnerabilityPublished 18 Mar 2026Updated 10 Sep 2026

CVE-2026-22851: freerdp3 vulnerabilities

Affects freerdp3Source GCVE Database

Not known to be exploited · fixed in 3.5.1+dfsg1-0ubuntu1.4 : patch freerdp3 soon.

Data as of 26 Oct 2026, 10:12 UTC

Severity

High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 3.5.1+dfsg1-0ubuntu1.4, 3.16.0+dfsg-2ubuntu0.3

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

usn-8105-1

What to do

Upgrade the Ubuntu freerdp3 to 3.5.1+dfsg1-0ubuntu1.4 (package) or 3.16.0+dfsg-2ubuntu0.3 (package).

Patches and advisories

ubuntu.com/security/notices/USN-8105-1 (opens in a new tab)

Affected software

Product	Affected	Fixed in
Ubuntu 25.10freerdp3`pkg:deb/ubuntu/freerdp3?arch=source&distro=questing`Other threats	Affected <3.16.0+dfsg-2ubuntu0.3	Fixed in 3.16.0+dfsg-2ubuntu0.3
Ubuntu 24.04 LTSfreerdp3`pkg:deb/ubuntu/freerdp3?arch=source&distro=noble`Other threats	Affected <3.5.1+dfsg1-0ubuntu1.4	Fixed in 3.5.1+dfsg1-0ubuntu1.4

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available and the issue is fixed in updated package versions: for Ubuntu 25.10, libfreerdp3-3 version 3.16.0+dfsg-2ubuntu0.3 and for Ubuntu 24.04 LTS, libfreerdp3-3 version 3.5.1+dfsg1-0ubuntu1.4. Users should apply standard system updates to receive these fixes.

Description

FreeRDP versions listed incorrectly handle certain RDP packets, allowing a remote attacker to cause a crash (denial of service) or potentially execute arbitrary code. This vulnerability affects multiple specific versions of the freerdp3 package on Ubuntu 24.04 LTS and 25.10 releases. A patch is available and can be applied via standard system updates.

Impact

A remote attacker could exploit this vulnerability to cause FreeRDP to crash, resulting in denial of service, or potentially execute arbitrary code on the affected system. This could lead to system instability or compromise depending on the attacker's success in code execution.

Summary

CVE-2026-22851 is a vulnerability in FreeRDP where improper handling of certain RDP packets can lead to a crash or possible arbitrary code execution by a remote attacker. The issue affects multiple specific freerdp3 package versions on Ubuntu 24.04 LTS and 25.10. The vendor has released fixes in updated package versions to address these issues.

References

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