7.5

CVE-2023-39351: debian debian_linux NULL Pointer Dereference

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2023-39351DEBIAN-CVE-2023-39351
Published 31-08-2023Last modified 03-11-2025
Open JSON

Vulnerability summary

CVE-2023-39351 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 1.56% chance of exploitation in the next 30 days, higher than 74.9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.56%
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 of FreeRDP are subject to a Null Pointer Dereference leading a crash in the RemoteFX (rfx) handling. Inside the `rfx_process_message_tileset` function, the program allocates tiles using `rfx_allocate_tiles` for the number of numTiles. If the initialization process of tiles is not completed for various reasons, tiles will have a NULL pointer. Which may be accessed in further processing and would cause a program 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

1.56%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

0.00 pp

From 1.56% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.56%

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

11 links
Show all 11 references