CVE-2026-40435
published 2026-05-13CVE-2026-40435: When configured, IP-based access restrictions for httpd do not cover all endpoints, which may allow connections from blocked addresses. Note: Software versions…
PriorityP430medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
0.23%
13.7th percentile
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.
Affected
66 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| f5 | big-ip | >= 16.1.0 < * | * |
| f5 | big-ip | >= 17.1.0 < 17.1.3.1 | 17.1.3.1 |
| f5 | big-ip | >= 17.5.0 < 17.5.1.4 | 17.5.1.4 |
| f5 | big-ip_access_policy_manager | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_access_policy_manager | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_access_policy_manager | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_advanced_firewall_manager | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_advanced_firewall_manager | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_advanced_firewall_manager | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_advanced_web_application_firewall | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_advanced_web_application_firewall | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_advanced_web_application_firewall | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_analytics | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_analytics | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_analytics | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_application_acceleration_manager | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_application_acceleration_manager | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_application_acceleration_manager | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_application_security_manager | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_application_security_manager | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_application_security_manager | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_application_visibility_and_reporting | 16.1.0 – 16.1.6 | — |
| f5 | big-ip_application_visibility_and_reporting | 17.1.0 – 17.1.3 | — |
| f5 | big-ip_application_visibility_and_reporting | 17.5.0 – 17.5.1 | — |
| f5 | big-ip_automation_toolchain | 16.1.0 – 16.1.6 | — |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
nvdv4.06.9MEDIUMCVSS: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
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VulDB
F5 BIG-IP prior 17.1.3.1/17.5.1.4 httpd unprotected alternate channel (K000156604)
vuldb·2026-05-13·CVSS 6.9
CVE-2026-40435 [MEDIUM] F5 BIG-IP prior 17.1.3.1/17.5.1.4 httpd unprotected alternate channel (K000156604)
A vulnerability described as problematic has been identified in F5 BIG-IP. Affected by this issue is some unknown functionality of the component httpd. The manipulation results in unprotected alternate channel.
This vulnerability is identified as CVE-2026-40435. The attack can be executed remotely. There is not any exploit available.
Upgrading the affected component is recommended.
GHSA
GHSA-8463-7qgv-32mg: When configured, IP-based access restrictions for httpd do not cover all endpoints, which may allow connections from blocked addresses
ghsa_unreviewed·2026-05-13
CVE-2026-40435 [MEDIUM] CWE-420 GHSA-8463-7qgv-32mg: When configured, IP-based access restrictions for httpd do not cover all endpoints, which may allow connections from blocked addresses
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.
F5
CVE-2026-40435: When configured, IP-based access restrictions for httpd do not cover all endpoints, which may allow connections from ...
vendor_f5·2026-05-13·CVSS 6.9
CVE-2026-40435 [MEDIUM] CWE-420 CVE-2026-40435: When configured, IP-based access restrictions for httpd do not cover all endpoints, which may allow connections from ...
CVE-2026-40435: When configured, IP-based access restrictions for httpd do not cover all endpoints, which may allow connections from ...
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.
F5 Advisory Articles: K000156604
F5 References: https://my.f5.com/manage/s/article/K000156604
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-05-13
Published