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Review reviewHigh

CVE-2025-25613

s3150-8t2f firmware, s3150-8t2f

FS Inc S3150-8T2F 8-Port Gigabit Ethernet L2+ Switch, 8 x Gigabit RJ45, with 2 x 1Gb SFP, Fanless. All versions before 2.2.0D Build 135103 were discovered to transmit cookies for their web based administrative application containing usernames and passwords. These were transmitted in cleartext using simple base64 encoding during every POST request made to the server.

CVSS
7.5
EPSS
0.23%
13.4% percentile
CISA KEV
Not listed
Published
2025.11.21
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.23%
Technical severityCVSS 7.5

Vulnerability overview

FS Inc S3150-8T2F 8-Port Gigabit Ethernet L2+ Switch, 8 x Gigabit RJ45, with 2 x 1Gb SFP, Fanless. All versions before 2.2.0D Build 135103 were discovered to transmit cookies for their web based administrative application containing usernames and passwords. These were transmitted in cleartext using simple base64 encoding during every POST request made to the server.

Affected product and versions

Product
s3150-8t2f firmware, s3150-8t2f
Affected versions
< 2.2.0D
Fixed versions
2.2.0D

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that s3150-8t2f firmware, s3150-8t2f and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
CWE-312