Is CVE-2021-41531 actively exploited?

No active exploitation of CVE-2021-41531 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-41531 be exploited remotely?

Yes. CVE-2021-41531 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-41531?

CVE-2021-41531 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2021-41531

HIGH

CVE-2021-41531

CWE-1288Published: September 21, 2021· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

NLnet Labs Routinator prior to 0.10.0 produces invalid RTR payload if an RPKI CA uses too large values in the max-length parameter in a ROA. This will lead to RTR clients such as routers to reject the RPKI data set, effectively disabling Route Origin Validation.

NVD Source

Technical Analysis

CVE-2021-41531 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.