CVE-2025-61984 (GCVE-0-2025-61984)

Vulnerability from cvelistv5 – Published: 2025-10-06 00:00 – Updated: 2026-02-26 17:48
VLAI KEVintel KEV
Summary
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.)
Severity
3.6 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-159 - Improper Handling of Invalid Use of Special Elements
Assigner
References
Impacted products
Vendor Product Version
OpenBSD OpenSSH Affected: 0 , < 10.1 (custom)
Create a notification for this product.
KEVintel KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 427780cd-171c-4030-a20f-86c26e0ffed6

Vulnerability ID: CVE-2025-61984

Status: Confirmed

Status Updated: 2025-10-15 14:56 UTC

Exploited: Yes

Timestamps
First Seen: 2025-10-15
Asserted: 2025-10-15
Scope
Notes: KEVIntel entry: ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to... | Affected: OpenBSD / OpenSSH | CVSS: 3.6 (LOW) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to...
Vendor OpenBSD
Product OpenSSH
Added Date 2025-10-15T14:56:30.000Z
Cvss Score 3.6
Epss Score None
Cvss Severity LOW
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-19 12:45 UTC | Updated: 2026-06-19 12:45 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.