01 Record
CVE-2026-20052
Cisco Secure Firewall Threat Defense Software Snort 3 Memory Management Denial of Service Vulnerability
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
02 Description
Cisco Secure Firewall Threat Defense Software Snort 3 Memory Management Denial of Service Vulnerability
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.
- EPSS probability
- 0.43% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 37.8% 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 2026-08-20.
- 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 17:46Z7 MO AGO
- Last updated
- 2026-03-04 20:46Z7 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-788Access of Memory Location After End of BufferBase
- Data version
- 5.2
- Document digest
- 0183010cf27d49b6466a94c30038bf93bb31cc88b5d8e033deb85733dd19aafc
05 Affected products
VendorProductVersionsPlatforms
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.4.0, 7.4.1, 7.4.1.1, 7.6.0, 7.4.2, 7.4.2.1—
06 References
- sec.cloudapps.cisco.comcisco-sa-ftd-snort3ssl-FBEKYXpHhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3ssl-FBEKYXpH