Search/CVE-2026-20054
● CVE — Medium

CVE-2026-20054

VendorciscoProductunified threat defense snort intrusion prevention system engine, snort, secure firewall threat defense, cyber visionDiscoveredMar 4, 2026UpdatedAug 20, 2026

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 error checking when decompressing VBA data. 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 the Snort 3 Detection Engine to enter an infinite loop, causing a DoS condition.

CVSS v3.1
5.8 MEDIUM
EPSS
0.49%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Oct 31, 2026
▲ 0.06pp
0.43% → 0.49% over 4 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeCHANGED
ConfidentialityNONE
IntegrityNONE
AvailabilityLOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Connections
5 relationships
Timeline
disclosure → media coverage
Mar 4, 2026
Disclosure — published as a CVE record. · last revised by NVD Aug 20, 2026