What’s Vulnerable › Vulnerabilities

CVE-2026-14461: Out-of-bound read in mtr

• Severity: medium (CVSS 5.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-10 · updated 2026-10-24
• Weakness: CWE-125

Description

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.

Affected products

• BitWizard mtr: through 0.96

References

• https://cert.pl/en/posts/2026/07/CVE-2026-14461
• https://github.com/traviscross/mtr/commit/48e1794414d338ce47abc0f27c25ade8788af9c3

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