CVE-2023-27997

criticalknown exploitedpublic exploitcovered by 3 sourcesfirst seen 2023-06-13

Actively exploited. CVE-2023-27997 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-06-13) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.

Public exploit code is available. Proof-of-concept or working exploit code for CVE-2023-27997 is indexed in GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.

Research from the NCSC designed to eradicate vulnerability classes and make the top-level mitigations easier to implement.

CSIRTS triage

Other

What: Research aims to categorize vulnerability classes for easier mitigation.
Who is affected: Organizations managing vulnerabilities.
Urgency: Remediation is important for improving vulnerability management.
Action: Review the research findings for implementation.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.

Exploit availability

Public exploit or proof-of-concept code for CVE-2023-27997 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.

GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗

Advisory coverage (3)

unknownPost-exploitation activities in Fortinet FortiGate (April 11, 2025)cert-fr-alerte · 2025-04-11
unknownexploitedA method to assess 'forgivable' vs 'unforgivable' vulnerabilitiesncsc-uk · 2025-01-28
criticalexploitedCVE-2023-27997: Fortinet FortiOS and FortiProxy SSL-VPN Heap-Based Buffer Overflow Vulnerabilitycisa-kev · 2023-06-13

External references

NVD record for CVE-2023-27997

CVE.org record

CISA KEV catalog

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