CVE-2023-20246: cisco cisco firepower threat defense software Authentication Bypass by Spoofing
Vulnerability summary
CVE-2023-20246 is a medium (CVSS 5.8) Authentication Bypass by Spoofing vulnerability in cisco cisco firepower threat defense software. EPSS estimates a 0.56% chance of exploitation in the next 30 days, higher than 45.6% of scored vulnerabilities.
Timeline
- 01-11-2023PublishedVulnerability first disclosed.
- 06-09-2024Last modifiedVulnerability information updated.
Description
Multiple Cisco products are affected by a vulnerability in Snort access control policies that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a logic error that occurs when the access control policies are being populated. An attacker could exploit this vulnerability by establishing a connection to an affected device. A successful exploit could allow the attacker to bypass configured access control rules on the affected system.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NDiffers
EPSS trend
Probability
0.56%
Chance of exploitation in the next 30 days
Percentile
46%
Versus all other CVEs
30-day change
0.00 pp
From 0.56% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco4 products
- cisco firepower threat defense software7.0.0 | 7.0.0.1 | 7.0.1 | 7.0.1.1 | 7.0.2 | 7.0.2.1 | 7.0.3 | 7.0.4 | 7.0.5 | 7.1.0 | 7.1.0.1 | 7.1.0.2 | 7.1.0.3 | 7.2.0 | 7.2.0.1 | 7.2.1 | 7.2.2 | 7.2.3 | 7.3.0 | 7.3.1 | 7.3.1.1
- cisco umbrella insights virtual applianceN/A
- ios_xe≥ 17.12, < 17.12.2
- secure_firewall_threat_defense≥ 7.0.0, ≤ 7.3.1.1
Snort1 product
- snort≥ 3.0.0, < 3.1.57.0
2 vendors · 5 products
References
1 links- sec.cloudapps.cisco.com/security/…Vendor Advisory