Microsoft Security Response Center guidance
Vendor revision: Aug 13, 2026CBL-Mariner Releases
Vendor-listed releases
- 0.95-4
Vulnerability intelligence
CVE-2026-14461 and is rated Medium severity with a CVSS score of 5.1. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
CBL-Mariner Releases
Vendor-listed releases
mtr is vulnerable to Out-of-bound read vulnerability in ipinfo_lookup() function. An attacker who can influence the TXT response used for AS lookups can trigger this bug by returning a DNS response that is larger than 512 bytes and uses a crafted compression pointer in the answer NAME field. ipinfo_lookup() function uses the length of the response as the end-of-message boundary for dn_expand() function.
The result is a reliable crash.
This issue exists in the mtr through version 0.96 and it was fixed in commit 48e1794414d338ce47abc0f27c25ade8788af9c3.
Source: NVD