CVE-2023-28368 — TP-Link L2 switch T2600G-28SQ firmware versions prior to 'T2600G-28SQ(UN)_V1_1

TP-Link L2 switch T2600G-28SQ firmware versions prior to 'T2600G-28SQ(UN)_V1_1.0.6 Build 20230227' uses vulnerable SSH host keys. A fake device may be prepared to spoof the affected device with the vulnerable host key.If the administrator may be tricked to login to the

01What is this vulnerability?

TP-Link L2 switch T2600G-28SQ firmware versions prior to 'T2600G-28SQ(UN)_V1_1.0.6 Build 20230227' uses vulnerable SSH host keys. A fake device may be prepared to spoof the affected device with the vulnerable host key.If the administrator may be tricked to login to the fake device, the credential information for the affected device may be obtained.

02Affected products

Vendor	Product	Versions
TP-Link Corporation Limited	T2600G	28SQ — firmware versions prior to 'T2600G-28SQ(UN)_V1_1.0.6 Build 20230227'

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-04-11T00:00:00.000Z
• Last modified: 2025-02-10T20:54:23.215Z

09References

• www.tp-link.com — https://www.tp-link.com/en/support/download/t2600g-28sq/#Firmware
• jvn.jp — https://jvn.jp/en/jp/JVN62420378/