F5 BIG-IP prior 17.1.3.2/17.5.1.6/21.0.0.2 iControl REST Endpoint os command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in F5 BIG-IP and classified as critical. Impacted is an unknown function of the component iControl REST Endpoint. Performing a manipulation results in os command injection. This vulnerability is known as CVE-2026-34176. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in F5 BIG-IP. This affects an unknown part of the component iControl REST Endpoint. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

When running in Appliance mode, an authenticated remote command injection vulnerability exists in an undisclosed iControl REST endpoint. A successful exploit can allow the attacker to cross a security boundary.   Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

It is possible to read the advisory at my.f5.com. This vulnerability is uniquely identified as CVE-2026-34176 since 05/01/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/24/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 316103 (F5 Networks BIG-IP : Appliance mode iControl REST vulnerability (K000160857)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 17.1.3.2, 17.5.1.6 or 21.0.0.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (316103) and CERT Bund (WID-SEC-2026-1532). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • F5 BIG-IP

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.7
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 316103
Nessus Name: F5 Networks BIG-IP : Appliance mode iControl REST vulnerability (K000160857)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: BIG-IP 17.1.3.2/17.5.1.6/21.0.0.2

Timelineinfo

05/01/2026 CVE reserved
05/13/2026 +12 days Advisory disclosed
05/13/2026 +0 days VulDB entry created
05/24/2026 +11 days VulDB entry last update

Sourcesinfo

Vendor: f5.com

Advisory: K000160857
Status: Confirmed

CVE: CVE-2026-34176 (🔒)
GCVE (CVE): GCVE-0-2026-34176
GCVE (VulDB): GCVE-100-363555
CERT Bund: WID-SEC-2026-1532 - F5 BIG-IP Produkte: Mehrere Schwachstellen

Entryinfo

Created: 05/13/2026 17:41
Updated: 05/24/2026 23:39
Changes: 05/13/2026 17:41 (76), 05/17/2026 11:20 (7), 05/24/2026 23:39 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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