Quick answers
- Is CVE-2026-21810 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-21810 being exploited in the wild.
- How severe is CVE-2026-21810?
- Medium severity, with a CVSS score of 4.4, published 26 August 2026.
- Which products and versions are affected?
- HCL BigFix Quantum Risk Analyzer.
- Is there a fix for CVE-2026-21810?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-21810 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-21810?
- Check whether you run HCL BigFix Quantum Risk Analyzer. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability stems from two distinct weaknesses: hardcoded external resource references (CWE-347/CWE-610) and insufficient binary integrity checks (CWE-353). The hardcoded references may expose sensitive endpoints or credentials embedded in the application, while the lack of binary integrity verification allows tampering with the executable without detection. Both issues are typically exploitable from the local attack surface or through supply-chain manipulation. An attacker could exploit these to extract configuration data, credentials, or inject unauthorized code into running instances. Patches should address resource hardcoding and implement cryptographic signature verification for binary authenticity.
Affected products
- HCL BigFix Quantum Risk Analyzer
Timeline
- 2026-08-26: disclosed