CVE-2018-5513: f5 networks, inc. big-ip (ltm, aam, afm, analytics, apm, asm, dns, edge gateway, gtm, link controller, pem, webaccelerator, websafe) Improper Input Validation
Vulnerability summary
CVE-2018-5513 is a high (CVSS 7.5) Improper Input Validation vulnerability in f5 networks, inc. big-ip (ltm, aam, afm, analytics, apm, asm, dns, edge gateway, gtm, link controller, pem, webaccelerator, websafe). EPSS estimates a 1.70% chance of exploitation in the next 30 days, higher than 76.7% of scored vulnerabilities.
Timeline
- 01-06-2018PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
On F5 BIG-IP 13.1.0-13.1.0.3, 13.0.0, 12.1.0-12.1.3.3, 11.6.1-11.6.3.1, 11.5.1-11.5.5, or 11.2.1, a malformed TLS handshake causes TMM to crash leading to a disruption of service. This issue is only exposed on the data plane when Proxy SSL configuration is enabled. The control plane is not impacted by this issue.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.70%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
-0.06 pp
From 1.76% 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
F513 products
- big-ip_access_policy_manager≥ 11.2.1, ≤ 11.5.5 | ≥ 11.6.1, ≤ 11.6.3 | ≥ 12.1.0, ≤ 12.1.3 | ≥ 13.1.0, ≤ 13.1.0.4 | 13.0.0
- big-ip_advanced_firewall_manager≥ 11.2.1, ≤ 11.5.5 | ≥ 11.6.1, ≤ 11.6.3 | ≥ 12.1.0, ≤ 12.1.3 | ≥ 13.1.0, ≤ 13.1.0.4 | 13.0.0
- big-ip_analytics≥ 11.2.1, ≤ 11.5.5 | ≥ 11.6.1, ≤ 11.6.3 | ≥ 12.1.0, ≤ 12.1.3 | ≥ 13.1.0, ≤ 13.1.0.4 | 13.0.0
- big-ip_application_acceleration_manager≥ 11.2.1, ≤ 11.5.5 | ≥ 11.6.1, ≤ 11.6.3 | ≥ 12.1.0, ≤ 12.1.3 | ≥ 13.1.0, ≤ 13.1.0.4 | 13.0.0
- big-ip_application_security_manager≥ 11.2.1, ≤ 11.5.5 | ≥ 11.6.1, ≤ 11.6.3 | ≥ 12.1.0, ≤ 12.1.3 | ≥ 13.1.0, ≤ 13.1.0.4 | 13.0.0
F5 networks, inc.1 product
- big-ip (ltm, aam, afm, analytics, apm, asm, dns, edge gateway, gtm, link controller, pem, webaccelerator, websafe)13.1.0-13.1.0.3 | 13.0.0 | 12.1.0-12.1.3.3 | 11.6.1-11.6.3.1 | 11.5.1-11.5.5 | 11.2.1
2 vendors · 14 products