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CVE-2023-28390: Privilege escalation vulnerability in SR-7100VN firmware Ver.1.38(N) and earlier and SR-7100VN #31 firmware Ve

31
Routine
MEDIUM 6.8MITIGATEUPGRADE

CVE-2023-28390 is a medium-severity flaw (CVSS 6.8) affecting sr-7100vn firmware, sr-7100vn\#31 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score6.8 (Medium)
Attack vectorAdjacent network
Attack complexityLow
Privileges neededHigh
User interactionNone
EPSS exploit chance0.3% (top 73%)
CISA exploited listNo
Published2023-05-23
Last modified2026-06-17
Publisher (CNA): JPCERT/CC · Vendor: icom

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

icom sr-7100vn firmware MITIGATE
Affected: < 1.39\(n\)
Fixed in: 1.39\(n\)
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.
icom sr-7100vn\#31 firmware UPGRADE
Affected: < 1.22
Fixed in: 1.22
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-2023-28390?

sr-7100vn firmware: mitigate or apply the listed mitigation; sr-7100vn\#31 firmware: upgrade to 1.22. Exact commands for each OS are on this page.

Is CVE-2023-28390 being exploited?

CVE-2023-28390 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-2023-28390 affect?

CVE-2023-28390 affects sr-7100vn firmware, sr-7100vn\#31 firmware. Severity is medium (CVSS 6.8). 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 administr

How urgent is CVE-2023-28390?

Priority 31/100. No elevated risk signals yet.

References

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