Is CVE-2021-41531 in the CISA KEV catalog?

No. CVE-2021-41531 is not currently on the CISA Known Exploited Vulnerabilities list.

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

CVE-2021-41531 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-41531?

CVE-2021-41531 has an EPSS score of 0.90% (55th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-41531?

Upgrade routinator to 0.10.0 or later.

CVE & CISA-KEV Catalog

CVE-2021-41531

HIGH

7.5

CVSS v3

NVD

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.

CWE-1288 CWE-20Improper Input Validation

How to fix

Remediation Available

routinatorNVD

Affected:< 0.10.0Fixed in:0.10.0CVE-2021-41531derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

0.90%probability of exploitation in 30 days

55thpercentile

Moderate risk: more likely to be exploited than 55% of all known CVEs.

References

Vendor Advisory1

nlnetlabs.nl

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.