CVE-2026-22854
published 2026-01-14CVE-2026-22854: FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read…
PriorityP355critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.45%
36.5th percentile
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. This vulnerability is fixed in 3.20.1.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | freerdp2 | < freerdp3 3.20.2+dfsg-1 (forky) | freerdp3 3.20.2+dfsg-1 (forky) |
| debian | freerdp3 | < freerdp3 3.20.2+dfsg-1 (forky) | freerdp3 3.20.2+dfsg-1 (forky) |
| freerdp | freerdp | < 3.20.1 | 3.20.1 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv4.06.8MEDIUMCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
osv6.8MEDIUM
vendor_debian6.8MEDIUM
vendor_redhat6.8MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
FreeRDP up to 3.20.0 heap-based overflow (GHSA-47vj-g3c3-3rmf / EUVD-2026-2673)
vuldb·2026-06-11·CVSS 9.8
CVE-2026-22854 [CRITICAL] FreeRDP up to 3.20.0 heap-based overflow (GHSA-47vj-g3c3-3rmf / EUVD-2026-2673)
A vulnerability was found in FreeRDP up to 3.20.0 and classified as critical. Affected is an unknown function. The manipulation results in heap-based buffer overflow.
This vulnerability is reported as CVE-2026-22854. The attack can be launched remotely. No exploit exists.
It is suggested to upgrade the affected component.
OSV
CVE-2026-22854: FreeRDP is a free implementation of the Remote Desktop Protocol
osv·2026-01-14·CVSS 6.8
CVE-2026-22854 [MEDIUM] CVE-2026-22854: FreeRDP is a free implementation of the Remote Desktop Protocol
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. This vulnerability is fixed in 3.20.1.
Ubuntu
FreeRDP vulnerabilities
vendor_ubuntu·2026-03-18
CVE-2026-25954 FreeRDP vulnerabilities
Title: FreeRDP vulnerabilities
Summary: Several security issues were fixed in FreeRDP.
It was discovered that FreeRDP incorrectly handled certain RDP packets. A
remote attacker could use this issue to cause FreeRDP to crash, resulting
in a denial of service, or possibly execute arbitrary code.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
freerdp: FreeRDP heap-buffer-overflow
vendor_redhat·2026-01-14·CVSS 6.8
CVE-2026-22854 [MEDIUM] CWE-122 freerdp: FreeRDP heap-buffer-overflow
freerdp: FreeRDP heap-buffer-overflow
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. This vulnerability is fixed in 3.20.1.
A heap based buffer overflow has been discovered in FreeRDP. This heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory.
Statement: Red Hat products in their default configuration employ Address Space Layout Randomization (ASLR) which drastically increa
Debian
CVE-2026-22854: freerdp2 - FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1...
vendor_debian·2026·CVSS 6.8
CVE-2026-22854 [MEDIUM] CVE-2026-22854: freerdp2 - FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1...
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. This vulnerability is fixed in 3.20.1.
Scope: local
bookworm: open
bullseye: open
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-22854 freerdp2: FreeRDP heap-buffer-overflow [fedora-42]
bugzilla·2026-01-14·CVSS 6.8
CVE-2026-22854 [MEDIUM] CVE-2026-22854 freerdp2: FreeRDP heap-buffer-overflow [fedora-42]
CVE-2026-22854 freerdp2: FreeRDP heap-buffer-overflow [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change the 'version'
to a later
Bugzilla
CVE-2026-22854 freerdp: FreeRDP heap-buffer-overflow
bugzilla·2026-01-14·CVSS 6.8
CVE-2026-22854 [MEDIUM] CVE-2026-22854 freerdp: FreeRDP heap-buffer-overflow
CVE-2026-22854 freerdp: FreeRDP heap-buffer-overflow
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. This vulnerability is fixed in 3.20.1.
Discussion:
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9
Via RHSA-2026:6340 https://access.redhat.com/errata/RHSA-2026:6340
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9.6 Extended Update Support
Via RHSA-2026:6727 https://access.redhat.com/errata/RHSA-2026:6727
---
This issue has been addressed in the following
Wiz
CVE-2026-22854 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 6.8
CVE-2026-22854 [MEDIUM] CVE-2026-22854 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-22854 :
NixOS vulnerability analysis and mitigation
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. This vulnerability is fixed in 3.20.1.
Source : NVD
## 6.8
Score
Published January 14, 2026
Severity MEDIUM
CNA Score 6.8
Affected Technologies
NixOS
Alma Linux
Has Public Exploit Yes
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 24.8
Exploitation Probability (EPSS) 0.1
Affected packages and libraries
freerdp-sdl
libfreerdp3-3
Sources
NVD
2026-01-14
Published