CVE-2026-0968: A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by s

Q: How do I fix CVE-2026-0968?

libssh: upgrade to newer than 0.11.3; enterprise linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2026-0968 being exploited?

CVE-2026-0968 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-0968 affect?

CVE-2026-0968 affects libssh, enterprise linux. Severity is low (CVSS 3.1). A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed 'longname' field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can

Q: How urgent is CVE-2026-0968?

Priority 26/100. On your watchlist

Routine

LOW 3.1WATCHLISTUPGRADEMITIGATE

CVE-2026-0968 is a low-severity flaw (CVSS 3.1) affecting libssh, enterprise linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed 'longname' field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can lead to reading beyond allocated memory on the heap. This can cause unexpected behavior or lead to a denial of service (DoS) due to application crashes.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	3.1 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-476
Published	2026-03-26
Last modified	2026-09-01

Publisher (CNA): Red Hat, Inc. · Vendor: libssh · redhat

Last updated 2026-09-01 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-26 21:17 UTCPublished CVE record published
2026-09-01 13:18 UTCUpdated Record last modified

libssh libssh UPGRADE

Affected: <= 0.11.3

Fixed in: newer than 0.11.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libssh || rpm -q libssh || libssh --version

2. UPGRADE to newer than 0.11.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libssh

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libssh

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

redhat enterprise linux MITIGATE

Affected: 9.0 · 10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-0968?

libssh: upgrade to newer than 0.11.3; enterprise linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-0968 being exploited?

CVE-2026-0968 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-0968 affect?

CVE-2026-0968 affects libssh, enterprise linux. Severity is low (CVSS 3.1). A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed 'longname' field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can

How urgent is CVE-2026-0968?

Priority 26/100. On your watchlist

Related CVEs

CVE-2025-14821 HIGH 7.8 UPGRADE MITIGATE A flaw was found in libssh
CVE-2026-59849 LOW 3.1 UPGRADE MITIGATE A flaw was found in libssh
CVE-2026-59842 LOW 3.7 DOWNGRADE MITIGATE A flaw was found in libssh
CVE-2026-15370 MEDIUM 6.7 UPGRADE MITIGATE A flaw was found in libssh
CVE-2026-59847 MEDIUM 5.9 UPGRADE MITIGATE A flaw was found in libssh

References

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