Vulnerability · Published Oct 26, 2026 · Assigned by NLnet Labs
CVE-2026-72753Routinator incorrectly handles delta updates
High 8.2
In plain English
A high-severity security flaw in Routinator from NLnet Labs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.4%top 66.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
When Routinator encounters an RRDP notification file with gaps in the delta entries, it is still accepted and parsed, potentially leading to missing data. If it encounters too many delta entries it may run out of memory.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NLnet Labs | Routinator | see references |
Weakness: CWE-755 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
References
- https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-72753.txt vendor-advisory