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01 Record

CVE-2026-20005

Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting

MediumPUBLISHEDCNA: cisco
CNA base score5.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
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02 Description

Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.52% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 43.9% of scored records. A rank, not a probability.
NVD base score
5.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
NVD analysis status
Analyzed. NVD last modified this record on 2026-09-01.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-03-04 17:02Z7 MO AGO
Last updated
2026-03-04 18:04Z7 MO AGO
Reserved
2025-10-08
Assigning CNA
cisco
Record state
PUBLISHED
Severity
Medium (CVSS 5.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Weaknesses
  • CWE-392Missing Report of Error ConditionBase
Data version
5.2
Document digest
95f1e4d63143fdc0359cc7416a06ce0dd2f4c164e87fcf6e3303a38b378f802c

05 Affected products

VendorProductVersionsPlatforms
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.6.0, 7.6.1, 7.6.2, 7.6.2.1, 7.7.0, 7.7.10, 7.7.10.1—
CiscoCisco Cyber Vision3.0.4, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.5, 3.0.6, 3.1.0, 3.1.2, 3.1.1, 3.2.3, 3.2.1, 3.2.4, 3.2.0, 3.2.2, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.1.0, 4.1.1, 4.1.2, 4.1.3, 4.1.4, 4.1.5, 4.1.6, 4.1.7, 4.2.0, 4.2.1, 4.2.4, 4.2.6, 4.2.2, 4.2.3, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.4.0, 4.4.1, 4.4.2, 4.4.3, 5.0.0, 5.0.1, 5.0.2, 5.1.1, 5.1.2, 5.1.3, 5.2.0, 5.2.1, 5.3.0, 5.3.1, 5.3.2—
CiscoCisco UTD SNORT IPS Engine Software17.2.1r, 17.3.1a, 17.3.2, 17.3.3, 17.3.4a, 17.3.6, 17.3.5, 17.3.7, 17.3.8, 17.4.1a, 17.4.2, 17.4.1b, 17.5.1a, 17.6.1a, 17.6.2, 17.6.3a, 17.6.4, 17.6.5, 17.6.6, 17.6.7, 17.6.8a, 17.7.1a, 17.7.2, 17.10.1a, 17.9.1a, 17.9.2a, 17.9.3a, 17.9.4, 17.9.5a, 17.9.6, 17.9.5e, 17.9.5f, 17.9.7a, 17.9.8, 17.9.7b, 17.8.1a, 17.11.1a, 17.12.1a, 17.12.2, 17.12.3, 17.12.4, 17.12.4a, 17.12.4b, 17.12.5, 17.12.5a, 17.12.5b, 17.12.5c, 17.12.6, 17.12.5d, 17.13.1a, 17.14.1a, 17.15.1a, 17.15.2a, 17.15.2c, 17.15.3, 17.15.3a, 17.15.4, 17.15.4c, 17.16.1a, 17.17.1, 17.18.1a, 17.18.2—

06 References