CVE-2025-15661VulnerabilityPublished 7 Aug 2026Updated 3 Nov 2026

SUSE · Security update for libssh2_org

Affects SUSESource GCVE Database

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Mentioned vulnerabilities

Not known to be exploited.

Data as of 4 Nov 2026, 02:29 UTC

Severity

High

Rated by Threat Radar · CVSS not yet scored by NVD

Exploitation evidence

Disclosed: evidence found.
CVE published 7 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

Description

This update for libssh2_org fixes the following issues: - CVE-2025-15661: out-of-bounds heap read vulnerability in the `sftp_symlink()` function in `src/sftp.c` (bsc#1268546). - CVE-2026-7598: integer overflow in function `userauth_password` of file `src/userauth.c` (bsc#1263890). - CVE-2026-55199: pre-authentication DoS via the `SSH_MSG_EXT_INFO` handler (bsc#1268530). - CVE-2026-58050: heap buffer overflow due to missing bounds check in attribute count of publickey-subsystem response (bsc#1269568). - CVE-2026-58051: uninitialized pointer freed when malformed responses are sent by an SSH server (bsc#1269567). - CVE-2026-66032: arbitrary code execution via double-free in SFTP session (bsc#1272737). - CVE-2026-66033: denial of service via integer underflow in AES-GCM cipher negotiation (bsc#1272736). - CVE-2026-66034: information disclosure and potential arbitrary code execution via heap out-of-bounds read (bsc#1272735). - CVE-2026-66035: arbitrary code execution via heap buffer overflow during SSH negotiation (bsc#1272734).

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