CVE-2026-27859

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably formatted mail message causes mail delivery process to consume large amounts of CPU time. Use MTA capabilities to limit RFC 2231 MIME parameters in mail messages, or upgrade to fixed version where the processing is limited. No publicly available exploits are known.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-400

Affected software

No affected versions have been published.

Timeline

Published: Mar 27, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-27869.8Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thun CVE-2026-278605.3If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially CVE-2026-278674.8An attacker with access via network to the Regesta Smart HD-PLC of the provider Teldat (in this case, registration action is required) who h CVE-2026-278686.9An attacker with access via network to the Regesta Smart HD-PLC of the provider Teldat (in this case, NO registration action is required) wh CVE-2026-278696.9An attacker with access via network to the Regesta Smart HD-PLC of the provider Teldat (in this case, NO registration action is required) wh CVE-2026-27879.8Use-after-free in the DOM: Window and Location component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8 CVE-2026-278704.8An attacker with access via network to the Regesta Smart HD-PLC of the provider Teldat (in this case, registration action IS required) who h CVE-2026-278712.9Cwe-327 Use of a Broken or Risky Cryptographic Algorithm vulnerability in Johnson Controls TL280 allows Cryptanalytic Attack. This issue af CVE-2026-278725.6- Improper Privilege Management vulnerability in Johnson Controls Easy IO FG allows (Brute Force). This issue affects Easy IO FG: before 2.CVE-2026-278735.6- Use of Hard-coded Credentials vulnerability in Johnson Controls EasyIO FG allows - Pasword Spraying. This issue affects EasyIO FG: before CVE-2026-278745.0: Use of Hard-coded Credentials vulnerability in Johnson Controls EasyIO FS32 allows : Exploitation of Default or Hard-coded Credentials. T CVE-2026-278756.9Cleartext Storage of Sensitive Information in Memory vulnerability in Johnson Controls Simplex Incident Manager / Autocall Fire Administrato