9.1

CVE-2026-31897: freerdp Out-of-bounds Read

CVSS: 9.1v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2026-31897DEBIAN-CVE-2026-31897
Published 13-03-2026Last modified 13-03-2026
Open JSON

Vulnerability summary

CVE-2026-31897 is a critical (CVSS 9.1) Out-of-bounds Read vulnerability in freerdp. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 37.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
0.45%
0%100%
Low · +0.16 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:10408-1USN-8561-1

Timeline

  1. 13-03-2026
    PublishedVulnerability first disclosed.
  2. 13-03-2026
    Last modifiedVulnerability information updated.

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-bounds read in freerdp_bitmap_decompress_planar when SrcSize is 0. The function dereferences *srcp (which points to pSrcData) without first verifying that SrcSize >= 1. When SrcSize is 0 and pSrcData is non-NULL, this reads one byte past the end of the source buffer. This vulnerability is fixed in 3.24.0.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

+0.16 pp

From 0.29% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.45%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Freerdp

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Ubuntu3 products
  • freerdpAll versions (No fix recorded)
  • freerdp2All versions (No fix recorded)
  • freerdp3< 3.30.0+dfsg-0ubuntu0.24.04.1 | All versions (No fix recorded)
Debian2 products
  • freerdp2All versions (No fix recorded)
  • freerdp3< 3.15.0+dfsg-2.1+deb13u2 | < 3.24.0+dfsg-1
Freerdp1 product

3 vendors · 6 products

References

6 links