On F5 BIG-IP versions 13.0.0 or 12.1.0 - 12.1.3.1, when a specifically configured virtual server receives traffic of an undisclosed nature,
On F5 BIG-IP versions 13.0.0 or 12.1.0 - 12.1.3.1, when a specifically configured virtual server receives traffic of an undisclosed nature, TMM will crash and take the configured failover action, potentially causing a denial of service. The configuration which exposes this issue is not common and in general does not work when enabled in previous versions of BIG-IP. Starting in 12.1.0, BIG-IP will crash if the configuration which exposes this issue is enabled and the virtual server receives non TCP traffic. With the fix of this issue, additional configuration validation logic has been added to prevent this configuration from being applied to a virtual server. There is only data plane exposure to this issue with a non-standard configuration. There is no control plane exposure.
- Published
- Mar 22, 2018
- Updated
- Jun 16, 2026
- EPSS
- 2.8% · 86th percentile
- CWE
- CWE-20
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.8%
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 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 link controller | cpe:2.3:a:f5:big-ip_link_controller |
| f5 | big-ip local traffic manager | cpe:2.3:a:f5:big-ip_local_traffic_manager |
| f5 | big-ip policy enforcement manager | cpe:2.3:a:f5:big-ip_policy_enforcement_manager |
| f5 | big-ip websafe | cpe:2.3:a:f5:big-ip_websafe |
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 manager12.1.0 and later · before 12.1.3.2
- f5 big-ip access policy manager13.0.0 and later · before 13.1.0.4
- f5 big-ip advanced firewall manager12.1.0 and later · before 12.1.3.2
- f5 big-ip advanced firewall manager13.0.0 and later · before 13.1.0.4
- f5 big-ip application acceleration manager12.1.0 and later · before 12.1.3.2
- f5 big-ip application acceleration manager13.0.0 and later · before 13.1.0.4
- f5 big-ip application security manager12.1.0 and later · before 12.3.1.2
- f5 big-ip application security manager13.0.0 and later · before 13.1.0.4
- f5 big-ip link controller12.1.0 and later · before 12.1.3.2
- f5 big-ip link controller13.0.0 and later · before 13.1.0.4
- f5 big-ip local traffic manager12.1.0 and later · before 12.1.3.2
- f5 big-ip local traffic manager13.0.0 and later · before 13.1.0.4
- f5 big-ip policy enforcement manager12.1.0 and later · before 12.1.3.2
- f5 big-ip policy enforcement manager13.0.0 and later · before 13.1.0.4
- f5 big-ip websafe1.0.0
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 Networks, Inc. BIG-IP (LTM, AAM, AFM, APM, ASM, Link Controller, PEM, WebSafe)
- 13.0.0, 12.1.0 - 12.1.3.1affected
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.
No credits in the CNA record.
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
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-20 · Improper Input ValidationCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Server Side Include (SSI) InjectionCAPEC-101likelihood: High · High
- Cross Zone ScriptingCAPEC-104likelihood: Medium · High
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Double EncodingCAPEC-120likelihood: Low · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
ATT&CK techniques
- Obfuscated Files or InformationT1027
- Masquerading: Invalid Code SignatureT1036.001
- Steal Web Session CookieT1539
- Subvert Trust Controls: Code SigningT1553.002
- Impair Defenses:Impair Command History LoggingT1562.003
- Hijack Execution Flow:Dynamic Linker HijackingT1574.006
- Hijack Execution Flow:Path Interception by PATH Environment VariableT1574.007
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
- www.securityfocus.com/bid/103504
- www.securitytracker.com/id/1040562
- support.f5.com/csp/article/K49440608
Vendor advisories and official records. Exploit/PoC links are deliberately left out.