CVE-2026-40684 in Exim

Tóm tắt

Bởi MITRE • 01/05/2026

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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• Tiết lộ: 01/05/2026
• Kiểm duyệt: được chấp nhận
• mục: VDB-360393
• CPE: sẵn sàng
• CWE: CWE-404 (Đã xác nhận)
• CVSS: 5.3 (VulDB)
• EPSS: 0.00190
• KEV: không
• Các hoạt động: rất thấp
• ngành: Pharma, Education, ...

Nguồn

• 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/