CVE•Published 2026-06-26•Modified 2026-06-26•0 articles on news•4 live references•NVD data
CVE-2023-20540
Vulnerability data via NVD (ingested)
CVSS v3.1
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EPSS percentile
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Weaknesses (CWE)
Description
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.
Timeline
Published 2026-06-26
Modified 2026-06-26
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2023-20540Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2023-20540Censys host search filtered to this CVE id.
grep.app
CVE-2023-20540Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2023-20540GitHub code search for direct mentions.
Google dork
"CVE-2023-20540" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (1)
We haven't classified any articles referencing CVE-2023-20540 yet. The external references above still apply.