What is the CVSS score of CVE-2026-27755?

CVE-2026-27755 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Sl902 Swtgw124as Firmware are affected by CVE-2026-27755?

A critical vulnerability in Sl902-Swtgw124As gateway firmware (versions up to 200.1.20) uses insufficiently random values for security functions, potentially allowing attackers to predict or bypass…

How to fix or mitigate CVE-2026-27755?

Within 24 hours: Identify and inventory all Sl902-Swtgw124As devices running firmware 200.1.20 or earlier; isolate critical instances to air-gapped or highly restricted networks if possible. Within 7 days: Implement network segmentation to limit lateral movement from compromised gateways; enable enhanced logging and monitoring for suspicious authentication patterns; contact vendor for patch timeline and interim guidance. Within 30 days: Deploy compensating controls (see below); develop remediation plan for firmware upgrade when patch releases; conduct forensic review for signs of exploitation.

Sl902 Swtgw124as Firmware CVE-2026-27755

CRITICAL

Use of Insufficiently Random Values (CWE-330)

2026-02-27 disclosure@vulncheck.com

Authentication Bypass Sl902 Swtgw124as Firmware Sodola Network

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Feb 27, 2026 - 19:16 nvd

CRITICAL 9.8

DescriptionCVE.org

SODOLA SL902-SWTGW124AS firmware versions through 200.1.20 contain a weak session identifier generation vulnerability that allows attackers to forge authenticated sessions by computing predictable MD5-based cookies. Attackers who know or guess valid credentials can calculate the session identifier offline and bypass authentication without completing the login flow, gaining unauthorized access to the device.

AnalysisAI

Weak session identifier generation in SODOLA SL902-SWTGW124AS network switch firmware allows attackers to predict session tokens and hijack administrative sessions.