CVE-2026-45185

Katalog CVE

CVSS 9.8 · Critical EPSS 0,94%

Kerentanan Use After Free pada exim. Skor CVSS 3.1 9.8 (Critical) menurut mitre.org.

Deskripsi (NVD)

Exim before 4.99.3, in certain GnuTLS configurations, has a remotely reachable use-after-free in the BDAT body parsing path. It is triggered when a client sends a TLS close_notify mid-body during a CHUNKING transfer, followed by a final cleartext byte on the same TCP connection. This can lead to heap corruption. An unauthenticated network attacker exploiting this vulnerability could execute arbitrary code.

Rincian

Terbit di NVD

12 Mei 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.8 (Critical), sumber mitre.org
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-416: Use After Free

EPSS (30 hari)

0,94% peluang dieksploitasi; lebih tinggi dari 60,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://code.exim.org/exim/wiki/wiki/EximSecurity advisory vendor
• https://www.openwall.com/lists/oss-security/2026/05/12/4 mailing list · advisory pihak ketiga
• https://xbow.com/blog/dead-letter-cve-2026-45185-xbow-found-rce-exim advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2026/05/12/25 mailing list · advisory pihak ketiga
• https://exim.org product
• https://exim.org/static/doc/security/CVE-2026-45185.txt broken link
• https://exim.org/static/doc/security/EXIM-Security-2026-05-01.1/ release notes
• https://news.ycombinator.com/item?id=48111748 issue tracking