CVE-2026-113868
Uninitialized memory disclosure and out-of-bounds read in POP3 and SMTP NTLM authentication
MEDIUM 5.3
En bref
- Source
- NVD
- EPSS
- EPSS 0.43 % · centile 37 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- mozilla
- Statut NVD
- Awaiting Analysis
Description
When authenticating to a POP3 or SMTP server using NTLM, Thunderbird did not check whether the server's challenge was valid base64. A malicious server could send a challenge that caused Thunderbird to include uninitialized heap memory in its NTLM response, disclosing that memory to the server. A challenge consisting only of base64 padding also caused an out-of-bounds read, crashing Thunderbird. This affected accounts configured to use NTLM or GSSAPI authentication. The uninitialized memory disclosure only affected NTLM. This vulnerability was fixed in Thunderbird 158.0.1 and Thunderbird 153.5.1.
Faiblesses (CWE)
- CWE-125 — Lecture hors limites
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-105295
- GCVE · GCVE-0-2026-113868
Avis du CERT-FR
- CERTFR-2026-AVI-1346 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr
Produits affectés
| Produit | Versions |
|---|---|
| Mozilla · Thunderbird | unaffected 153.5.1 ≤ 153.* ; unaffected 158.0.1 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |