CVE-2026-55005

Microsoft Exchange Server Remote Code Execution Vulnerability

En bref

Sévérité
HIGH 8.8
EPSS
EPSS 1.01 % · centile 63 (2026-10-27)
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
microsoft
Statut NVD
Analyzed

Description

Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execute code over a network.

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Cmicrosoft
CVSS 3.1HIGH 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · secure@microsoft.com (Secondary)

Faiblesses (CWE)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Microsoft · Microsoft Exchange Server 2016 Cumulative Update 23affected 15.01.0.0 < 15.01.2507.071
Microsoft · Microsoft Exchange Server 2019 Cumulative Update 14affected 15.02.0.0 < 15.02.1544.043
Microsoft · Microsoft Exchange Server 2019 Cumulative Update 15affected 15.02.0.0 < 15.02.1748.048
Microsoft · Microsoft Exchange Server Subscription Edition RTMaffected 15.02.0.0 < 15.02.2562.045

Références

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD