CVE-2023-28390 — Privilege escalation vulnerability in SR-7100VN firmware Ver

Privilege escalation vulnerability in SR-7100VN firmware Ver.1.38(N) and earlier and SR-7100VN #31 firmware Ver.1.21 and earlier allows a network-adjacent attacker with administrative privilege of the affected product to obtain an administrative privilege of the OS (Operating Sys

01What is this vulnerability?

Privilege escalation vulnerability in SR-7100VN firmware Ver.1.38(N) and earlier and SR-7100VN #31 firmware Ver.1.21 and earlier allows a network-adjacent attacker with administrative privilege of the affected product to obtain an administrative privilege of the OS (Operating System). As a result, an arbitrary OS command may be executed.

02Affected products

Vendor	Product	Versions
ICOM INCORPORATED	SR	7100VN — SR-7100VN firmware Ver.1.38(N) and earlier, and SR-7100VN #31 firmware Ver.1.21 and earlier

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: 2023-05-23T00:00:00.000Z
• Last modified: 2025-01-17T18:19:45.140Z

09References

• www.icom.co.jp — https://www.icom.co.jp/news/7239/
• jvn.jp — https://jvn.jp/en/jp/JVN80476232/