How severe is CVE-2023-39455?

CVE-2023-39455 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-39455 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39455?

CVE-2023-39455 primarily affects Elecom Wrc-600ghbk-a Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-39455?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-39455 published?

CVE-2023-39455 was published on 2023-08-18 and last updated on 2026-06-17.

CVE-2023-39455

CVE-2023-39455 is a high-severity vulnerability in Elecom Wrc-600ghbk-a Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Elecom Wrc-600ghbk-a Firmware
Published: 2023-08-18
Last modified: 2026-06-17

Description

OS command injection vulnerability in ELECOM wireless LAN routers allows an authenticated user to execute an arbitrary OS command by sending a specially crafted request. Affected products and versions are as follows: WRC-600GHBK-A all versions, WRC-1467GHBK-A all versions, WRC-1900GHBK-A all versions, WRC-733FEBK2-A all versions, WRC-F1167ACF2 all versions, WRC-1467GHBK-S all versions, and WRC-1900GHBK-S all versions.

Frequently asked questions

What is CVE-2023-39455?: OS command injection vulnerability in ELECOM wireless LAN routers allows an authenticated user to execute an arbitrary OS command by sending a specially crafted request. Affected products and versions are as follows: WRC-600GHBK-A all versions, WRC-1467GHBK-A all versions, WRC-1900GHBK-A all versions, WRC-733FEBK2-A all versions, WRC-F1167ACF2 all versions, WRC-1467GHBK-S all versions, and WRC-1900GHBK-S all versions.
How severe is CVE-2023-39455?: CVE-2023-39455 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-39455 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39455?: CVE-2023-39455 primarily affects Elecom Wrc-600ghbk-a Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-39455?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-39455 published?: CVE-2023-39455 was published on 2023-08-18 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:o:elecom:wrc-600ghbk-a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-1467ghbk-a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-1900ghbk-a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-733febk2-a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-f1167acf2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-1467ghbk-s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-1900ghbk-s_firmware:*:*:*:*:*:*:*:*

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