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Medium 5.3Published May 30, 2026
CVE-2026-48840Exim 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.
Updated under an hour ago ()
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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
- 5.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-839
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jul 22, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
exim exim exim:exim | from 4.88 before 4.99.4 | NVD |
References
- https://exim.org/static/doc/security/EXIM-Security-2026-05-19.1vendor-advisory
- https://www.openwall.com/lists/oss-security/2026/05/29/3mailing-list, mitigation, third-party-advisory
- http://www.openwall.com/lists/oss-security/2026/05/29/3mailing-list, mitigation, third-party-advisory
- https://lists.debian.org/debian-lts-announce/2026/06/msg00004.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.