BIG-IP httpd access control vulnerability
When configured, IP-based access restrictions for httpd do not cover all endpoints, which may allow connections from blocked addresses. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
- Published
- May 13, 2026
- Updated
- Jun 29, 2026
- EPSS
- 0.3% · 22th percentile
- CWE
- CWE-420
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Report tools
Action score
27
Monitor
Low priority for now.
- CVSS
- 27 / 40 · 6.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · f5
- 5.3
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| f5 | big-ip access policy manager | cpe:2.3:a:f5:big-ip_access_policy_manager |
| f5 | big-ip advanced firewall manager | cpe:2.3:a:f5:big-ip_advanced_firewall_manager |
| f5 | big-ip advanced web application firewall | cpe:2.3:a:f5:big-ip_advanced_web_application_firewall |
| f5 | big-ip analytics | cpe:2.3:a:f5:big-ip_analytics |
| f5 | big-ip application acceleration manager | cpe:2.3:a:f5:big-ip_application_acceleration_manager |
| f5 | big-ip application security manager | cpe:2.3:a:f5:big-ip_application_security_manager |
| f5 | big-ip application visibility and reporting | cpe:2.3:a:f5:big-ip_application_visibility_and_reporting |
| f5 | big-ip automation toolchain | cpe:2.3:a:f5:big-ip_automation_toolchain |
| f5 | big-ip carrier-grade nat | cpe:2.3:a:f5:big-ip_carrier-grade_nat |
| f5 | big-ip container ingress services | cpe:2.3:a:f5:big-ip_container_ingress_services |
| f5 | big-ip ddos hybrid defender | cpe:2.3:a:f5:big-ip_ddos_hybrid_defender |
| f5 | big-ip domain name system | cpe:2.3:a:f5:big-ip_domain_name_system |
and 9 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- f5 big-ip access policy manager16.1.0 and later · up to 16.1.6 inclusive
- f5 big-ip access policy manager17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip access policy manager17.5.0 and later · up to 17.5.1 inclusive
- f5 big-ip advanced firewall manager16.1.0 and later · up to 16.1.6 inclusive
- f5 big-ip advanced firewall manager17.5.0 and later · up to 17.5.1 inclusive
- f5 big-ip advanced firewall manager17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip advanced web application firewall16.1.0 and later · up to 16.1.6 inclusive
- f5 big-ip advanced web application firewall17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip advanced web application firewall17.5.0 and later · up to 17.5.1 inclusive
- f5 big-ip analytics16.1.0 and later · up to 16.1.6 inclusive
- f5 big-ip analytics17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip analytics17.5.0 and later · up to 17.5.1 inclusive
- f5 big-ip application acceleration manager17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip application acceleration manager16.1.0 and later · up to 16.1.6 inclusive
- f5 big-ip application acceleration manager17.5.0 and later · up to 17.5.1 inclusive
- f5 big-ip application security manager17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip application security manager17.5.0 and later · up to 17.5.1 inclusive
- f5 big-ip application security manager16.1.0 and later · up to 16.1.6 inclusive
- f5 big-ip application visibility and reporting17.1.0 and later · up to 17.1.3 inclusive
- f5 big-ip application visibility and reporting17.5.0 and later · up to 17.5.1 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (f5). Independent of NVD's CPE analysis and usually ahead of it.
F5 BIG-IP
- 21.0.0 and laternot affected
- 17.5.0 and later · before 17.5.1.4affected
- 17.1.0 and later · before 17.1.3.1affected
- 16.1.0 and lateraffected
Same product
f5: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-1388On F5 BIG-IP 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior KEV99Now
- CVE-2021-22986On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3 KEV99Now
- CVE-2020-5902In BIG-IP versions 15.0.0-15.1.0.3, 14.1.0-14.1.2.5, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, the Traffic Management User InteKEV99Now
- CVE-2023-46747BIG-IP Configuration utility unauthenticated remote code execution vulnerabilityKEV98Now
- CVE-2021-22991On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3,KEV87Now
- CVE-2026-94127BIG-IP APM OAuth vulnerabilityKEV68This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-420 · Unprotected Alternate ChannelCVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.