Buffer Overflow Vulnerability in OpenSSH Product by Red Hat
CVE-2026-110927

4.3MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
15 October 2026

What is CVE-2026-110927?

A vulnerability has been identified in OpenSSH, wherein a flaw exists that allows a compressed payload to exceed the maximum packet size during the negotiation phase. This oversight in the inflating process could lead to uncontrolled memory usage that adversely affects the process managing the connection. Such behavior poses potential risks, including resource exhaustion and denial of service, thereby impacting system stability and security. Users of affected OpenSSH versions are advised to implement mitigations and apply available patches promptly.

References

https://access.redhat.com/security/cve/CVE-2026-110927
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2553037
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Oleh Konko (1seal) for reporting this issue.
.