Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2025-61984

CVE-2025-61984LOW

OpenBSD OpenSSH — ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially lea…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   H   L   N  U  L  L  N    3.6   .0045   37.9     —

AFFECTED
  Product  Versions     Fixed
  OpenSSH  unspecified  —

TIMELINE
  Oct 6   Reserved by mitre
  Oct 6   Published (CNA: mitre)
  Oct 14  EXPLOIT PUBLISHED — CVE-2025-61984 (OpenBSD OpenSSH). Public exploit reference added.

CWE-159 · CNA: mitre · CVSS v3.1 · 10 references · NVD status: Deferred

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.)

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
October 6, 2025	Reserved	Reserved by mitre
October 6, 2025	Published	Published (CNA: mitre)
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2025-61984 (OpenBSD OpenSSH). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
OpenBSD	OpenSSH	—	—	—

Weaknesses

CWE-159

References (10)

Authoritative record: CVE-2025-61984 at cve.org

Vendors: openbsd

Weaknesses: CWE-159

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-61984 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.