CVE-2026-20053
Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Heap Overflow Denial of Service Vulnerability
MEDIUM 5.8
En bref
- Source
- NVD
- EPSS
- EPSS 0.44 % · centile 38 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- cisco
- Statut NVD
- Analyzed
Description
Multiple Cisco products are affected by a vulnerability in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. This vulnerability is due to improper range checking when decompressing VBA data, which is user controlled. An attacker could exploit this vulnerability by sending crafted VBA data to the Snort 3 Detection Engine on the targeted device. A successful exploit could allow the attacker to cause an overflow of heap data, which could cause a DoS condition.
Faiblesses (CWE)
- CWE-122 — Débordement de tampon sur le tas
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L | cisco |
| CVSS 3.1 | MEDIUM 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L | NVD · psirt@cisco.com (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-9459
- GCVE · GCVE-0-2026-20053
Configurations affectées (CPE NVD)
cpe:2.3:a:cisco:snort:*:*:*:*:*:*:*:*≥ 3.0.0-233 < 3.9.3.0cpe:2.3:a:cisco:cyber_vision:3.0.0:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.0.1:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.0.2:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.0.3:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.0.4:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.0.5:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.0.6:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.1.0:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.1.1:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.1.2:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.2.0:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.2.1:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.2.2:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.2.3:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:3.2.4:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.0.0:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.0.1:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.0.2:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.0.3:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.1.0:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.1.1:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.1.2:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.1.3:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.1.4:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.1.5:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.1.6:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.1.7:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.2.0:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.2.1:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.2.2:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.2.3:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.2.4:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.2.6:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.3.0:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.3.1:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.3.2:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.3.3:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.4.0:*:*:*:*:*:*:*cpe:2.3:a:cisco:cyber_vision:4.4.1:*:*:*:*:*:*:*- +80 autres
Produits affectés
| Produit | Versions |
|---|---|
| Cisco · Cisco Cyber Vision | affected 3.0.0 ; affected 3.0.2 ; affected 3.0.3 ; affected 3.0.1 ; affected 3.1.0 ; affected 3.0.4 |
| Cisco · Cisco Secure Firewall Threat Defense (FTD) Software | affected 7.2.0 ; affected 7.2.0.1 ; affected 7.2.1 ; affected 7.3.0 ; affected 7.2.2 ; affected 7.2.3 |
| Cisco · Cisco UTD SNORT IPS Engine Software | affected 17.12.1a ; affected 17.9.4 ; affected 17.12.2 ; affected 17.13.1a ; affected 17.12.3 ; affected 17.14.1a |
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 |