HOMEVULNERABILITIESCVE-2026-31884
HIGH

CVE-2026-31884

CWE-369Published: March 13, 2026· Updated: Mar 17, 2026

7.5
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:9.0th

Official Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, division by zero in MS-ADPCM and IMA-ADPCM decoders when nBlockAlign is 0, leading to a crash. In libfreerdp/codec/dsp.c, both ADPCM decoders use size % block_size where block_size = context->common.format.nBlockAlign. The nBlockAlign value comes from the Server Audio Formats PDU on the RDPSND channel. The value 0 is not validated anywhere before reaching the decoder. When nBlockAlign = 0, the modulo operation causes a SIGFPE (floating point exception) crash. This vulnerability is fixed in 3.24.0.

NVD Source

Technical Analysis

CVE-2026-31884 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

FreeRDP1 product
freerdp
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/FreeRDP/FreeRDP/commit/03b48b3601d867afccac1cdc6081de7a275edce7
PATCHhttps://github.com/FreeRDP/FreeRDP/commit/16df2300e1e3f5a51f68fb1626429e58b531b7c8
PATCHhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-jp7m-94ww-p56r
PATCHhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-jp7m-94ww-p56r

All References (4)

→
https://github.com/FreeRDP/FreeRDP/commit/03b48b3601d867afccac1cdc6081de7a275edce7Patch
→
https://github.com/FreeRDP/FreeRDP/commit/16df2300e1e3f5a51f68fb1626429e58b531b7c8Patch
→
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-jp7m-94ww-p56rExploit · Patch · Vendor Advisory
→
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-jp7m-94ww-p56rExploit · Patch · Vendor Advisory

Quick Facts

CVE IDCVE-2026-31884
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-369
CISA KEVNo
EPSS (30d)0.03%
Affected1 vendor
PublishedMar 13, 2026

Related CVEs (CWE-369)

CVE-2026-46470
9.1
CVE-2026-25799
7.5
CVE-2026-35215
7.5
CVE-2026-5747
7.5
CVE-2026-42209
6.5
CVE-2026-47153
6.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31884 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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