CVE-2026-20053

EUVD-2026-9459
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
ciscoCNA
5.8 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
ciscocyber_vision
3.0.0
CNA
ciscocyber_vision
3.0.2
CNA
ciscocyber_vision
3.0.3
CNA
ciscocyber_vision
3.0.1
CNA
ciscocyber_vision
3.1.0
CNA
ciscocyber_vision
3.0.4
CNA
ciscocyber_vision
3.1.1
CNA
ciscocyber_vision
3.1.2
CNA
ciscocyber_vision
3.2.0
CNA
ciscocyber_vision
3.0.5
CNA
ciscocyber_vision
3.2.1
CNA
ciscocyber_vision
3.0.6
CNA
ciscocyber_vision
3.2.2
CNA
ciscocyber_vision
3.2.3
CNA
ciscocyber_vision
3.2.4
CNA
ciscocyber_vision
4.0.0
CNA
ciscocyber_vision
4.0.1
CNA
ciscocyber_vision
4.0.2
CNA
ciscocyber_vision
4.0.3
CNA
ciscocyber_vision
4.1.0
CNA
ciscocyber_vision
4.1.1
CNA
ciscocyber_vision
4.1.2
CNA
ciscocyber_vision
4.1.3
CNA
ciscocyber_vision
4.1.4
CNA
ciscocyber_vision
4.2.0
CNA
ciscocyber_vision
4.2.1
CNA
ciscocyber_vision
4.1.5
CNA
ciscocyber_vision
4.2.2
CNA
ciscocyber_vision
4.2.3
CNA
ciscocyber_vision
4.2.4
CNA
ciscocyber_vision
4.2.6
CNA
ciscocyber_vision
4.1.6
CNA
ciscocyber_vision
4.3.0
CNA
ciscocyber_vision
4.3.1
CNA
ciscocyber_vision
4.3.2
CNA
ciscocyber_vision
4.3.3
CNA
ciscocyber_vision
4.4.0
CNA
ciscocyber_vision
4.4.1
CNA
ciscocyber_vision
4.4.2
CNA
ciscocyber_vision
4.4.3
CNA
ciscocyber_vision
4.1.7
CNA
ciscocyber_vision
5.0.0
CNA
ciscocyber_vision
5.0.1
CNA
ciscocyber_vision
5.0.2
CNA
ciscocyber_vision
5.1.0
CNA
ciscocyber_vision
5.1.1
CNA
ciscocyber_vision
5.1.2
CNA
ciscocyber_vision
5.1.3
CNA
ciscocyber_vision
5.2.0
CNA
ciscocyber_vision
5.2.1
CNA
ciscocyber_vision
5.3.0
CNA
ciscocyber_vision
5.3.1
CNA
ciscocyber_vision
5.3.2
CNA
ciscocyber_vision
7.2.0
CNA
ciscocyber_vision
7.2.0.1
CNA
ciscocyber_vision
7.2.1
CNA
ciscocyber_vision
7.3.0
CNA
ciscocyber_vision
7.2.2
CNA
ciscocyber_vision
7.2.3
CNA
ciscocyber_vision
7.3.1
CNA
ciscocyber_vision
7.2.4
CNA
ciscocyber_vision
7.2.5
CNA
ciscocyber_vision
7.2.4.1
CNA
ciscocyber_vision
7.3.1.1
CNA
ciscocyber_vision
7.4.0
CNA
ciscocyber_vision
7.2.5.1
CNA
ciscocyber_vision
7.4.1
CNA
ciscocyber_vision
7.2.6
CNA
ciscocyber_vision
7.4.1.1
CNA
ciscocyber_vision
7.2.7
CNA
ciscocyber_vision
7.2.5.2
CNA
ciscocyber_vision
7.3.1.2
CNA
ciscocyber_vision
7.2.8
CNA
ciscocyber_vision
7.6.0
CNA
ciscocyber_vision
7.4.2
CNA
ciscocyber_vision
7.2.8.1
CNA
ciscocyber_vision
7.4.2.1
CNA
ciscocyber_vision
7.2.9
CNA
ciscocyber_vision
7.7.0
CNA
ciscocyber_vision
7.4.2.2
CNA
ciscocyber_vision
7.2.10
CNA
ciscocyber_vision
7.6.1
CNA
ciscocyber_vision
7.4.2.3
CNA
ciscocyber_vision
7.6.2
CNA
ciscocyber_vision
7.7.10
CNA
ciscocyber_vision
7.6.2.1
CNA
ciscocyber_vision
7.7.10.1
CNA
ciscocyber_vision
7.4.2.4
CNA
ciscocyber_vision
7.2.10.2
CNA
ciscocyber_vision
7.4.3
CNA
ciscocyber_vision
17.12.1a
CNA
ciscocyber_vision
17.9.4
CNA
ciscocyber_vision
17.12.2
CNA
ciscocyber_vision
17.13.1a
CNA
ciscocyber_vision
17.12.3
CNA
ciscocyber_vision
17.14.1a
CNA
ciscocyber_vision
17.12.4
CNA
ciscocyber_vision
17.12.3a
CNA
ciscocyber_vision
17.15.1a
CNA
ciscocyber_vision
17.16.1a
CNA
ciscocyber_vision
17.9.5e
CNA
ciscocyber_vision
17.12.4a
CNA
ciscocyber_vision
17.15.2c
CNA
ciscocyber_vision
17.12.4b
CNA
ciscocyber_vision
17.15.2a
CNA
ciscocyber_vision
17.12.5
CNA
ciscocyber_vision
17.17.1
CNA
ciscocyber_vision
17.12.5a
CNA
ciscocyber_vision
17.15.3a
CNA
ciscocyber_vision
17.15.3
CNA
ciscocyber_vision
17.12.5b
CNA
ciscocyber_vision
17.12.5c
CNA
ciscocyber_vision
17.15.4
CNA
ciscocyber_vision
17.18.1
CNA
ciscocyber_vision
17.18.1a
CNA
ciscocyber_vision
17.12.6
CNA
ciscocyber_vision
17.15.4c
CNA
ciscocyber_vision
17.12.5d
CNA
ciscocyber_vision
17.18.2
CNA