CVE-2016-9253: f5 networks, inc. big-ip Improper Input Validation
CVSS: 7.5v3.0HighModified
Published 09-05-2017Last modified 06-08-2024
Vulnerability summary
CVE-2016-9253 is a high (CVSS 7.5) Improper Input Validation vulnerability in f5 networks, inc. big-ip. EPSS estimates a 1.33% chance of exploitation in the next 30 days, higher than 70.9% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.0 (NVD)EPSS score
1.33%
0%100%
Low · +0.04 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 09-05-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
In F5 BIG-IP 12.1.0 through 12.1.2, specific websocket traffic patterns may cause a disruption of service for virtual servers configured to use the websocket profile.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.33%
Chance of exploitation in the next 30 days
Percentile
71%
Versus all other CVEs
30-day change
+0.04 pp
From 1.29% on 21-09-2026
21-09-202621-10-2026
EPSS score1.33%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
F510 products
- big-ip_access_policy_manager12.1.0 | 12.1.1 | 12.1.2
- big-ip_advanced_firewall_manager12.1.0 | 12.1.1 | 12.1.2
- big-ip_analytics12.1.0 | 12.1.1 | 12.1.2
- big-ip_application_acceleration_manager12.1.0 | 12.1.1 | 12.1.2
- big-ip_application_security_manager12.1.0 | 12.1.1 | 12.1.2
F5 networks, inc.1 product
- big-ipEOL12.1.0-12.1.2
2 vendors · 11 products