CVE-2026-48840

MEDIUM EPSS 17.7%
Published May 30, 20261mo ago · Modified Jun 17, 20262w ago
5.3 CVSS 3.1
Medium
Find Similar
Published May 30, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

Exim 4.88 before 4.99.4, in some proxy configurations, mishandles certain short payloads, leading to disclosure of uninitialized stack memory values to a client.

CVSS Details

Base Score
5.3
Exploitability
3.9
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
17.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-839

Affected Products 1

VendorProductVersionRange
eximexim*≥4.88  –  <4.99.4

References 4

  • openwall.com http://www.openwall.com/lists/oss-security/2026/05/29/3
    Mailing ListMitigationThird Party Advisory
  • exim.org https://exim.org/static/doc/security/EXIM-Security-2026-05-19.1
    Vendor Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2026/06/msg00004.html
  • openwall.com https://www.openwall.com/lists/oss-security/2026/05/29/3
    Mailing ListMitigationThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.