Infinera G42 up to 7.x WebGUI insufficient granularity of access control

CVSS Meta Temp Score
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CTI Interest Score
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3.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Infinera G42 up to 7.x. Affected by this issue is some unknown functionality of the component WebGUI. This manipulation causes insufficient granularity of access control. This vulnerability appears as CVE-2025-27026. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Infinera G42 up to 7.x. Affected by this vulnerability is an unknown functionality of the component WebGUI. The manipulation with an unknown input leads to a insufficient granularity of access control vulnerability. The CWE definition for the vulnerability is CWE-1220. The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack required granularity, which renders the control policy too broad because it allows accesses from unauthorized agents to the security-sensitive assets. As an impact it is known to affect availability. The summary by CVE is:

A missing double-check feature in the WebGUI for CLI deactivation in Infinera G42 version R6.1.3 allows an authenticated administrator to make other management interfaces unavailable via local and network interfaces. The CLI deactivation via the WebGUI does not only stop CLI interface but deactivates also Linux Shell, WebGUI and Physical Serial Console access. No confirmation is asked at deactivation time. Loosing access to these services device administrators are at risk of completely loosing device control.

It is possible to read the advisory at cvcn.gov.it. This vulnerability is known as CVE-2025-27026 since 02/18/2025. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are necessary for exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 8.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-19724). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.7

VulDB Base Score: 2.7
VulDB Temp Score: 2.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 4.9
CNA Vector (ENISA): 🔍

CVSSv2info

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

Exploitinginfo

Class: Insufficient granularity of access control
CWE: CWE-1220 / CWE-284 / CWE-266
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: G42 8.0

Timelineinfo

02/18/2025 🔍
07/02/2025 +133 days 🔍
07/02/2025 +0 days 🔍
02/11/2026 +224 days 🔍

Sourcesinfo

Advisory: cvcn.gov.it
Status: Confirmed

CVE: CVE-2025-27026 (🔍)
GCVE (CVE): GCVE-0-2025-27026
GCVE (VulDB): GCVE-100-314623
EUVD: 🔍

Entryinfo

Created: 07/02/2025 16:17
Updated: 02/11/2026 23:17
Changes: 07/02/2025 16:17 (63), 07/02/2025 18:36 (1), 02/11/2026 23:17 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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