Security readout for executives and security teams
This issue affects HAProxy 1.6.x before 1.6.6. A remote attacker may be able to crash HAProxy when a denial is triggered by a reqdeny rule, creating a service outage for systems behind the proxy. Public sources do not provide CVSS scoring or detailed attack vectors. Exposure is most likely where HAProxy 1.6.x before 1.6.6 is deployed and configurations use reqdeny rules on traffic-reachable frontends. Systems not running the affected 1.6.x branch or without reqdeny usage are less likely to match the described condition. Treat this as a targeted availability risk, not a confirmed breach signal. Prioritize patching exposed HAProxy 1.6.x systems because proxy crashes can interrupt multiple applications, but urgency is moderated by limited public exploit evidence and incomplete technical detail. Mitigation focus: Upgrade HAProxy 1.6.x deployments to 1.6.6 or later.; Apply fixed packages from the operating system vendor, such as Ubuntu guidance where applicable.; Review HAProxy configurations for reqdeny rules on exposed frontends..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2016-5360 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
Products and packages named in the record
CWE details
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