Vulnerability-Lookup

CERTFR-2026-AVI-1220

Vulnerability from certfr_avis - Published: 2026-09-23 - Updated: 2026-09-23

Une vulnérabilité a été découverte dans F5 BIG-IP. Elle permet à un attaquant de provoquer une exécution de code arbitraire à distance.

L'éditeur indique que la vulnérabilité CVE-2026-94127 est activement exploitée. Des indicateurs de compromission sont disponibles dans l'avis de l'éditeur.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
F5	BIG-IP	BIG-IP APM versions 17.1.x antérieures à 17.1.3 sans le correctif Hotfix-BIGIP 17.1.3.5.0.41.14-ENG.iso
F5	BIG-IP	BIG-IP APM versions 21.x antérieures à 21.1.0 sans le correctif Hotfix-BIGIP-21.1.0.2.0.30.22-ENG.iso
F5	BIG-IP	BIG-IP APM versions 17.5.x antérieures à 17.5.1 sans le correctif Hotfix-BIGIP-17.5.1.9.0.160.12-ENG.iso

References

Title

Publication Time

CVE-2026-94127 (GCVE-0-2026-94127)

Vulnerability from cvelistv5 – Published: 2026-09-22 14:17 – Updated: 2026-09-23 03:55

Title

BIG-IP APM OAuth vulnerability

Summary

When a BIG-IP APM access policy and an OAuth profile are configured on a virtual server, specific malicious traffic can lead to remote code execution (RCE). This vulnerability is only present when BIG-IP APM is configured as an OAuth Authorization Server. Deployments using APM strictly as an OAuth Client / Resource Server (without OAuth authorization server profiles configured) are not affected by this vulnerability. Impact: This vulnerability allows an unauthenticated attacker to perform remote code execution. The BIG-IP system in Appliance mode is also vulnerable. This is a data plane issue; there is no control plane exposure. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: active Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-22 00:00 UTC

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

f5 mitre root

References

2 references

URL	Tags
https://my.f5.com/manage/s/article/K000162605	vendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
F5	BIG-IP	Affected: 21.1.0 , < Hotfix-BIGIP-21.1.0.2.0.30.22-ENG (custom) Affected: 17.5.0 , < Hotfix-BIGIP-17.5.1.9.0.160.12-ENG (custom) Affected: 17.1.0 , < Hotfix-BIGIP-17.1.3.5.0.41.14-ENG (custom)

Date Public

2026-09-22 14:00

Credits

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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