[UPDATE] [high] Exim: Vulnerability enables code execution

highCVE-2026-45185

A remote, anonymous attacker can exploit a vulnerability in Exim to execute arbitrary code.

CSIRTS triage

vendor: Exim product: Exim Remote code execution

What: A vulnerability permits unauthenticated remote attackers to execute arbitrary code.
Who is affected: Exim mail servers exposed to remote network access.
Urgency: High severity with unauthenticated remote code execution; patch immediately as a critical issue.
Action: Apply the security patch for CVE-2026-45185 without delay.

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

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: high
Published: 2026-08-14
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1505

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Moderate exploitation riskCVE-2026-451851.2% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 66% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-45185	coverage & exploitation status	NVD · CVE.org

Recent advisories for Exim

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

medium[UPDATE] [medium] Exim and cPanel/WHM: Multiple vulnerabilitiescert-bund · 2026-08-14
medium[UPDATE] [medium] Exim: Vulnerability enables privilege escalationcert-bund · 2026-08-14
high[UPDATE] [high] Exim: Vulnerability enables bypass of security measurescert-bund · 2026-08-14
medium[UPDATE] [medium] Exim: Vulnerability allows information disclosurecert-bund · 2026-07-28
medium[NEW] [medium] Exim: Multiple vulnerabilitiescert-bund · 2026-07-27
highCVE-2026-66141: Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe trans…nvd · 2026-07-24