6.8

CVE-2025-26465: debian debian_linux

CVSS: 6.8v3.1MediumModified
AliasesALPINE-CVE-2025-26465MGASA-2025-0080SUSE-SU-2025:0605-1
Published 18-02-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-26465 is a medium (CVSS 6.8) vulnerability in debian debian_linux. EPSS estimates a 7.72% chance of exploitation in the next 30 days, higher than 94.5% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.8/10
010
Medium · v3.1 (CVE.org)
EPSS score
7.72%
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 6 · Related 5
OPENSUSE-SU-2025:14820-1RHSA-2025:6993SUSE-SU-2025:0585-1SUSE-SU-2025:20160-1SUSE-SU-2025:20226-1USN-7270-1

Timeline

  1. 18-02-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

7.72%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

0.00 pp

From 7.72% on 19-09-2026

19-09-202619-10-2026
EPSS score
7.72%

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

Suse37 products
  • openssh-askpass-gnome&distro=SUSE Enterprise Storage 7.1< 8.4p1-150300.3.42.1
  • openssh-askpass-gnome&distro=SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS< 8.4p1-150300.3.42.1
  • openssh-askpass-gnome&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS< 8.4p1-150300.3.42.1
  • openssh-askpass-gnome&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS< 8.4p1-150300.3.42.1
  • openssh-askpass-gnome&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS< 8.4p1-150300.3.42.1
Redhat20 products
  • enterprise_linux9.0
  • openshift_container_platform4.0
  • openssh< 0:8.0p1-26.el8_10 | < 0:8.7p1-38.el9_4.5
  • openssh-askpass< 0:8.0p1-26.el8_10 | < 0:8.7p1-38.el9_4.5
  • openssh-askpass-debuginfo< 0:8.0p1-26.el8_10 | < 0:8.7p1-38.el9_4.5
Debian2 products
  • openssh< 1:9.9p2-1 | < 1:9.2p1-2+deb12u5 | < 1:8.4p1-5+deb11u4
  • debian_linuxEOL11.0 | 12.0
Netapp2 products
Ubuntu2 products
  • openssh< 1:7.2p2-4ubuntu2.10+esm7 | < 1:7.2p2-4ubuntu2.fips.2.10.7 | All versions (No fix recorded) | < 1:7.6p1-4ubuntu0.7+esm4 | < 1:7.9p1-10~ubuntu18.04.fips.0.10 | < 1:8.2p1-4ubuntu0.12 | < 1:8.2p1-4ubuntu0.fips.0.12 | < 1:8.9p1-3ubuntu0.11 | < 1:8.9p1-3ubuntu0.11+Fips1 | < 1:9.6p1-3ubuntu13.8 | < 1:9.6p1-3ubuntu13.12+Fips1
  • openssh-ssh1All versions (No fix recorded)
Alpine1 product
  • openssh≥ 6.9, < 9.3_p2-r3 | ≥ 6.9, < 9.6_p1-r2 | ≥ 6.9, < 9.7_p1-r5 | ≥ 6.9, < 9.9_p2-r0
Mageia1 product
  • openssh< 9.3p1-2.4.mga9
Openbsd1 product
  • openssh≥ 6.9, ≤ 9.8 | 6.8:p1 | 9.9 | 9.9:p1

8 vendors · 66 products

References

57 links
Show all 57 references