CVE-2026-20354
Cisco Secure Email S/MIME Ciphertext Decryption Vulnerabilty
MEDIUM 5.9
En bref
- Source
- NVD
- EPSS
- EPSS 0.20 % · centile 10 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- cisco
- Statut NVD
- Awaiting Analysis
Description
Multiple vulnerabilities in the Secure/Multipurpose Internet Mail Extensions (S/MIME) decryption functionality of Cisco Secure Email could allow an unauthenticated, remote attacker to recover plain text from encrypted email messages. These vulnerabilities are due to insufficient validation of message integrity. An attacker could exploit these vulnerabilities by using a machine-in-the-middle technique to intercept and modify traffic between email gateways. A successful exploit could allow the attacker to obtain plaintext content from the encrypted communication.
Faiblesses (CWE)
- CWE-354 — Validation incorrecte d'une valeur de contrôle d'intégrité
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | cisco |
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD · psirt@cisco.com (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-70210
- GCVE · GCVE-0-2026-20354
Produits affectés
| Produit | Versions |
|---|---|
| Cisco · Cisco Secure Email | affected 14.0.0-698 ; affected 13.5.1-277 ; affected 13.0.0-392 ; affected 14.2.0-620 ; affected 13.0.5-007 ; affected 13.5.4-038 |
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 |
| 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 |