9.8

CVE-2023-46850: debian debian_linux Use After Free

CVSS: 9.8v3.1CriticalModified
AliasesALPINE-CVE-2023-46850UBUNTU-CVE-2023-46850DEBIAN-CVE-2023-46850
Published 11-11-2023Last modified 23-06-2026
Open JSON

Vulnerability summary

CVE-2023-46850 is a critical (CVSS 9.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 2.00% chance of exploitation in the next 30 days, higher than 80.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
2.00%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
DSA-5555-1OPENSUSE-SU-2024:13429-1USN-6484-1

Timeline

  1. 11-11-2023
    PublishedVulnerability first disclosed.
  2. 23-06-2026
    Last modifiedVulnerability information updated.

Description

Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buffers to a remote peer.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

2.00%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

0.00 pp

From 2.00% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.00%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Openvpn4 products
Debian2 products
Alpine1 product
  • openvpn≥ 2.6.0, < 2.6.7-r0
Fedoraproject1 product
Ubuntu1 product
  • openvpn< 2.4.7-1ubuntu2.20.04.4 | < 2.5.5-1ubuntu3.1

5 vendors · 9 products

References

10 links