CRITICALExploited in the wildUnknown

SimpleHelp Authentication Bypass Vulnerability

https://simple-help.com/security/simplehelp-security-update-2026-05 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-48558

CVE-2026-48558Published 1 month agoSource: CISA KEV

Affected packages

No package-level mapping for this advisory.

Exploit signal

Known exploited (CISA KEV)
Yes
EPSS score
11.48%
EPSS percentile
95.6%

EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs. This advisory is in the top 96%.

Sources

No external sources available.

Recommended response stack

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SimpleHelp Authentication Bypass Vulnerability | HackTribune