CVE-2026-40684 in Exim

요약

\~에 의해 MITRE • 2026. 05. 01.

In Exim before 4.99.2, on systems using musl libc (not glibc), an attacker can crash the connection instance when malformed DNS data is present in PTR records. This is caused by a dn_expand oddity in octal printing.

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• 공개: 2026. 05. 01.
• 모더레이션: 수락
• 항목: VDB-360393
• CPE: 준비됨
• CWE: CWE-404 (확인됨)
• CVSS: 5.3 (VulDB)
• EPSS: 0.00190
• KEV: 아니요
• 활동: 매우 낮음
• 부문: Lawfirm, Hostingprovider, ...

출처

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-40684
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40684
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-40684/