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CVE-2016-5020

28
FAUCET Score

CVE-2016-5020 describes a critical vulnerability in F5 BIG-IP versions prior to 12.0.0 HF3, allowing authenticated attackers with Resource Administration privileges to modify other user accounts and escalate privileges through a crafted external EAV monitor script. With a CVSS score of 8.8 (High), this vulnerability is easily exploitable over the network with low attack complexity, leading to high impact on confidentiality, integrity, and availability. There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and it is not listed in CISA's KEV catalog, indicating no known active exploitation. Community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
10.2.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_wan_optimization_manager:10.2.1:*:*:*:*:*:*:*
10.2.2CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_wan_optimization_manager:10.2.2:*:*:*:*:*:*:*
10.2.3CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_wan_optimization_manager:10.2.3:*:*:*:*:*:*:*
10.2.4CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_wan_optimization_manager:10.2.4:*:*:*:*:*:*:*
11.2.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_wan_optimization_manager:11.2.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.43%
Probability of exploitation in next 30 days
EPSS Percentile
87.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0343 is in the 87th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

support.f5.com / kb/en-us/solutions/public/k/00/sol00265182.html
Vendor Advisory
securityfocus.com / bid/91532
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036131
Third Party AdvisoryVDB Entry