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CVE-2026-40686

🗓️ 29 Apr 2026 12:00:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 2 Views

CVE-2026-40686 allows possible out-of-bounds read with large UTF-8 trailing characters on UNIX.

Related
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Refs
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30 Apr 202613:50
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Debian
[SECURITY] [DSA 6265-1] exim4 security update
12 May 202614:23
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CVE-2026-40686
30 Apr 202600:00
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12 May 202600:00
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Tenable Nessus
Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : Exim vulnerabilities (USN-8228-1)
5 May 202600:00
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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu20.04anyexim40exim4_0_any.deb
Ubuntu22.04anyexim44.95-4ubuntu2.7exim4_4.95-4ubuntu2.7_any.deb
Ubuntu24.04anyexim44.97-4ubuntu4.4exim4_4.97-4ubuntu4.4_any.deb
Ubuntu25.10anyexim44.98.2-1ubuntu2.1exim4_4.98.2-1ubuntu2.1_any.deb
Ubuntu26.04anyexim44.99.1-1ubuntu1.1exim4_4.99.1-1ubuntu1.1_any.deb

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13 May 2026 16:52Current
6Medium risk
Vulners AI Score6
CVSS 3.13.7 - 5.3
EPSS0.00246
SSVC
2