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openssh: OpenSSH: Control characters in usernames can lead to code execution via ProxyCommand

🗓️ 23 Mar 2026 17:29:37Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 2 Views

OpenSSH flaw: usernames containing control chars from inputs can affect ProxyCommand and execute code.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: IBM i is Affected by Improper Handling of Special Elements and Improper Neutralization of Null Byte Vulnerabilities in OpenSSH [CVE-2025-61984, CVE-2025-61985]
18 May 202620:52
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in openssh library (CVE-2025-61984, CVE-2025-61985) affect Power HMC.
31 Mar 202615:30
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in OpenSSH affects IBM Netezza Appliance
15 Apr 202610:29
–ibm
IBM Security Bulletins		Security Bulletin: AIX/VIOS is vulnerable to potential code execution (CVE-2025-61984, CVE-2025-61985) due to OpenSSH
6 Jan 202621:08
–ibm
GithubExploit		Exploit for CVE-2025-61984
13 Oct 202501:42
–githubexploit
GithubExploit		Exploit for CVE-2025-61984
7 Oct 202503:17
–githubexploit
Tenable Nessus		Amazon Linux 2023 : openssh, openssh-clients, openssh-keycat (ALAS2023-2026-1441)
19 Feb 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : openssh, --advisory ALAS2-2026-3175 (ALAS-2026-3175)
19 Feb 202600:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0198: openssh (ALINUX3-SA-2025:0198)
29 Dec 202500:00
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Tenable Nessus		AlmaLinux 10 : openssh (ALSA-2025:23479)
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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64openssh10.2p1-9.hum1openssh-10.2p1-9.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64openssh10.2p1-9.hum1openssh-10.2p1-9.hum1.x86_64.rpm

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20 Jul 2026 17:58Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.13.6
EPSS0.00284
SSVC
CWE-159
OpenSSHcontrol charactersusernamesinputsProxyCommandcode execution
2