CVE-2023-20540

unknowncovered by 1 sourcefirst seen 2026-06-26

An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing arbitrary message input, potentially leading to a loss of data integrity.

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Exploitation outlook

Low exploitation risk0.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.

Advisory coverage (1)

unknownCVE-2023-20540: An observable timing discrepancy in the ASP could allow a privileged attacker to perform a bru…nvd · 2026-06-26

External references

NVD record for CVE-2023-20540

CVE.org record

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