CVE-2025-25613: FS Inc S3150-8T2F 8-Port Gigabit Ethernet L2+ Switch, 8 x Gigabit RJ45, with 2 x 1Gb SFP, Fanless

Q: How do I fix CVE-2025-25613?

s3150-8t2f firmware: upgrade to 2.2.0D. Exact commands for each OS are on this page.

Q: Is CVE-2025-25613 being exploited?

CVE-2025-25613 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-25613 affect?

CVE-2025-25613 affects s3150-8t2f firmware. Severity is high (CVSS 7.5). 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 usernam

Q: How urgent is CVE-2025-25613?

Priority 40/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2025-25613 is a high-severity flaw (CVSS 7.5) affecting s3150-8t2f firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 84%)
CISA exploited list	No
Weakness	CWE-312
Published	2025-11-20
Last modified	2026-07-05

Publisher (CNA): MITRE · Vendor: fs

Last updated 2026-07-05 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-20 21:16 UTCPublished CVE record published
2026-07-05 17:17 UTCUpdated Record last modified

fs s3150-8t2f firmware UPGRADE

Affected: < 2.2.0D

Fixed in: 2.2.0D

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-25613?

s3150-8t2f firmware: upgrade to 2.2.0D. Exact commands for each OS are on this page.

Is CVE-2025-25613 being exploited?

CVE-2025-25613 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-25613 affect?

CVE-2025-25613 affects s3150-8t2f firmware. Severity is high (CVSS 7.5). 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 usernam

How urgent is CVE-2025-25613?

Priority 40/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-25625 MEDIUM 5.4 MITIGATE A stored cross-site scripting vulnerability exists in FS model S3150-8T2F switches running firmware s3150-8t2f

References

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