What is CVE-2026-72758?

CVE-2026-72758 is a high-severity vulnerability, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.5/10. Published 2026-10-26.

How severe is CVE-2026-72758?

High severity. CVSS v3 base score is 7.5 out of 10.

CVE-2026-72758

CVE-2026-72758

When parsing an AS range in Routinator, if the maximum value of the range is smaller than the minimum value of the range, Routinator will never reach the maximum value and run out of memory.

Published 2026-10-26 · last modified 2026-10-26.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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.

Weakness classification (CWE)

CWE-755 — Improper Handling of Exceptional Conditions

References

www.nlnetlabs.nl/downloads/routinator/CVE-2026-72756.txt (vendor-advisory)

Frequently asked questions

What is CVE-2026-72758?: CVE-2026-72758 is a high-severity vulnerability, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.5/10. Published 2026-10-26.
How severe is CVE-2026-72758?: High severity. CVSS v3 base score is 7.5 out of 10.