PT-2025-27032 · Libssh+5 · Libssh+5

Ronald Crane · CVE-2025-5449 · Published 2025-04-22 · Updated 2026-06-30

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: libssh (affected versions not specified)

Description: The issue is related to an integer overflow in the sftp decode channel data to packet() function of the libssh library. This could allow a remote attacker to cause a denial of service.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Integer Overflow

Buffer Overflow

Out of bounds Read

Weakness Enumeration

CWE-190

CWE-119

CWE-125

Related Identifiers

ALT-PU-2025-10972

BDU:2025-07645

CVE-2025-5449

JLSEC-2025-100

OPENSUSE-SU-2025:15243-1

USN-7619-1

Affected Products

Alt Linux

Astra Linux

Linuxmint

Red Os

Ubuntu

Libssh

References · 54

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/5xxx/CVE-2025-5449.json · Exploit
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-5449 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-5449 · Security Note
• https://osv.dev/vulnerability/JLSEC-2025-100 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-4877 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2025-5449 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-4878 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-5449 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-07645 · Security Note
• https://osv.dev/vulnerability/CVE-2025-5449 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-5987 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7619-1 · Vendor Advisory
• https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11&id=f79ec51b7fd519dbc5737a7ba826e3ed093f6ceb · Patch
• https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11&id=3443aec90188d6aab9282afc80a81df5ab72c4da · Patch