What is the CVSS score of CVE-2026-45185?

CVE-2026-45185 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2026-45185?

Yes, a public proof-of-concept exploit is available for CVE-2026-45185. Prioritise patching immediately. EPSS: 0.1%.

Is there a patch available for CVE-2026-45185?

Yes, a patch is available for CVE-2026-45185. Update the affected software to the latest version immediately.

Exim CVE-2026-45185

EUVD-2026-29824 CRITICAL

Use After Free (CWE-416)

2026-05-12 mitre

GHSA-fhg4-whcv-f8v4

Use After Free Memory Corruption RCE

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SUSE

CRITICAL

qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVSS changed

May 12, 2026 - 21:22 NVD

9.8 (CRITICAL)

CVE Published

May 12, 2026 - 00:00 nvd

UNKNOWN (no severity yet)

CVE Published

May 12, 2026 - 00:00 nvd

CRITICAL 9.8

DescriptionCVE.org

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.