What is CVE-2026-115449?

CVE-2026-115449 is a low-severity vulnerability in Red Hat Enterprise Linux 10, classified under Information Disclosure. CVSS score: 3.5/10. Published 2026-10-22.

How severe is CVE-2026-115449?

Low severity. CVSS v3 base score is 3.5 out of 10.

Information disclosure in Red Hat Enterprise Linux 10

CVE-2026-115449

A flaw was found in libslirp. When handling ICMP echo requests, the reply length is not updated to match the actual data received from the host. Under specific conditions where the normal ICMP socket is unavailable, this length mismatch causes the host's real IP address to be leaked to the guest in the echo reply, breaking the NAT isolation that user-mode networking is expected to provide.

Vulnerability class: Information Disclosure

Published 2026-10-22 · last modified 2026-10-23.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

access.redhat.com/security/cve/CVE-2026-115449 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)

Frequently asked questions

What is CVE-2026-115449?: CVE-2026-115449 is a low-severity vulnerability in Red Hat Enterprise Linux 10, classified under Information Disclosure. CVSS score: 3.5/10. Published 2026-10-22.
How severe is CVE-2026-115449?: Low severity. CVSS v3 base score is 3.5 out of 10.