9.1

CVE-2023-39353: debian debian_linux Out-of-bounds Read

CVSS: 9.1v3.1CriticalModified
AliasesUBUNTU-CVE-2023-39353DEBIAN-CVE-2023-39353
Published 31-08-2023Last modified 03-11-2025
Open JSON

Vulnerability summary

CVE-2023-39353 is a critical (CVSS 9.1) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 1.48% chance of exploitation in the next 30 days, higher than 73.4% 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
1.48%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 8 · Related 4
DLA-3606-1DLA-4053-1MGASA-2023-0318OPENSUSE-SU-2024:13504-1RHSA-2024:2208SUSE-SU-2023:4611-1

Timeline

  1. 31-08-2023
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to a missing offset validation leading to Out Of Bound Read. In the `libfreerdp/codec/rfx.c` file there is no offset validation in `tile->quantIdxY`, `tile->quantIdxCb`, and `tile->quantIdxCr`. As a result crafted input can lead to an out of bounds read access which in turn will cause a crash. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

1.48%

Chance of exploitation in the next 30 days

Percentile

73%

Versus all other CVEs

30-day change

0.00 pp

From 1.48% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.48%

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

Debian2 products
Fedoraproject1 product
Freerdp1 product
  • freerdp≥ 3.0.0-beta1, < 3.0.0-beta3 | < 2.11.0 | 3.0.0:beta1 | 3.0.0:beta2
Ubuntu1 product
  • freerdp2< 2.2.0+dfsg1-0ubuntu0.18.04.4+esm1 | < 2.2.0+dfsg1-0ubuntu0.20.04.5 | < 2.6.1+dfsg1-3ubuntu2.4

4 vendors · 5 products

References

12 links
Show all 12 references