How severe is CVE-2023-35991?

CVE-2023-35991 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-35991 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-35991?

CVE-2023-35991 primarily affects Elecom Lan-wh300andgpe 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-2023-35991?

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

When was CVE-2023-35991 published?

CVE-2023-35991 was published on 2023-08-18 and last updated on 2026-06-17.

CVE-2023-35991

CVE-2023-35991 is a critical-severity vulnerability in Elecom Lan-wh300andgpe Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Elecom Lan-wh300andgpe Firmware
Published: 2023-08-18
Last modified: 2026-06-17

Description

Hidden functionality vulnerability in LOGITEC wireless LAN routers allows an unauthenticated attacker to log in to the product's certain management console and execute arbitrary OS commands. Affected products and versions are as follows: LAN-W300N/DR all versions, LAN-WH300N/DR all versions, LAN-W300N/P all versions, LAN-WH450N/GP all versions, LAN-WH300AN/DGP all versions, LAN-WH300N/DGP all versions, and LAN-WH300ANDGPE all versions.

Frequently asked questions

What is CVE-2023-35991?: Hidden functionality vulnerability in LOGITEC wireless LAN routers allows an unauthenticated attacker to log in to the product's certain management console and execute arbitrary OS commands. Affected products and versions are as follows: LAN-W300N/DR all versions, LAN-WH300N/DR all versions, LAN-W300N/P all versions, LAN-WH450N/GP all versions, LAN-WH300AN/DGP all versions, LAN-WH300N/DGP all versions, and LAN-WH300ANDGPE all versions.
How severe is CVE-2023-35991?: CVE-2023-35991 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-35991 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-35991?: CVE-2023-35991 primarily affects Elecom Lan-wh300andgpe 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-2023-35991?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-35991 published?: CVE-2023-35991 was published on 2023-08-18 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:o:elecom:lan-wh300andgpe_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:lan-wh300n\/dgp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:lan-wh300an\/dgp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:lan-wh450n\/gp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:lan-w300n\/p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:lan-wh300n\/dr_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:elecom:lan-w300n\/dr_firmware:*:*:*:*:*:*:*:*