Skip to main content
CVE-2025-61984VulnerabilityPublished Updated

OpenSSH · Ssh

Affects opensshSource GCVE Database

0
Compare
Authoritative record:CVE-2025-61984· Low 3.6

Not known to be exploited · CVSS 3.6 Low · fixed in 1:8.2p1-4ubuntu0.13+esm1 : update openssh when convenient.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score
3.6Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1:8.2p1-4ubuntu0.13+esm1, 1:8.2p1-4ubuntu0.fips.0.13.1, 1:8.9p1-3ubuntu0.14 +5
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Ubuntu 26.10openssh-ssh1pkg:deb/ubuntu/openssh-ssh1?arch=source&distro=stonkingOther threatsAffected
  • =1:7.5p1-18
  • =1:7.5p1-18ubuntu1
  • =1:7.5p1-18ubuntu2
Fixed in–
Ubuntu 26.04 LTSopensshpkg:deb/ubuntu/openssh?arch=source&distro=resoluteOther threatsAffected
  • <1:10.2p1-2ubuntu1
Fixed in
  • 1:10.2p1-2ubuntu1
Ubuntu 26.04 LTSopenssh-ssh1pkg:deb/ubuntu/openssh-ssh1?arch=source&distro=resoluteOther threatsAffected
  • =1:7.5p1-17
  • =1:7.5p1-18
Fixed in–
Ubuntu 25.10opensshpkg:deb/ubuntu/openssh?arch=source&distro=questingOther threatsAffected
  • <1:10.0p1-5ubuntu5.1
Fixed in
  • 1:10.0p1-5ubuntu5.1
Ubuntu 25.10openssh-ssh1pkg:deb/ubuntu/openssh-ssh1?arch=source&distro=questingOther threatsAffected
  • =1:7.5p1-17
Fixed in–
Ubuntu 24.04 LTSopensshpkg:deb/ubuntu/openssh?arch=source&distro=nobleOther threatsAffected
  • <1:9.6p1-3ubuntu13.15
Fixed in
  • 1:9.6p1-3ubuntu13.15

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to code execution when a ProxyCommand is used. The untrusted sources are the command line and %-sequence expansion of a configuration file. (A configuration file that provides a complete literal username is not categorized as an untrusted source.)

References

Community reviews

Loading reviews…