SB2026101473 - Denial of service in F5OS libssh
Published: October 14, 2026
Security Bulletin ID
SB2026101473
CSH Severity
Low
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2026-59848)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper handling of unexpected responses in the sftp client response queue when processing server-supplied sftp response packets. A remote attacker can send response packets with unknown request IDs to cause a denial of service.
The issue affects the client side only.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.