How severe is CVE-2023-41355?

CVE-2023-41355 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-2023-41355 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-2023-41355?

CVE-2023-41355 affects Nokia G-040w-q Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-41355?

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-2023-41355 published?

CVE-2023-41355 was published on 2023-11-03 and last updated on 2026-06-17.

CVE-2023-41355

CVE-2023-41355 is a critical-severity vulnerability in Nokia G-040w-q 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. The underlying weakness is classified as CWE-940.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-940
Affected product: Nokia G-040w-q Firmware
Published: 2023-11-03
Last modified: 2026-06-17

Description

Chunghwa Telecom NOKIA G-040W-Q Firewall function has a vulnerability of input validation for ICMP redirect messages. An unauthenticated remote attacker can exploit this vulnerability by sending a crafted package to modify the network routing table, resulting in a denial of service or sensitive information leaking.

Frequently asked questions

What is CVE-2023-41355?: Chunghwa Telecom NOKIA G-040W-Q Firewall function has a vulnerability of input validation for ICMP redirect messages. An unauthenticated remote attacker can exploit this vulnerability by sending a crafted package to modify the network routing table, resulting in a denial of service or sensitive information leaking.
How severe is CVE-2023-41355?: CVE-2023-41355 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-2023-41355 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-2023-41355?: CVE-2023-41355 affects Nokia G-040w-q Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-41355?: 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-2023-41355 published?: CVE-2023-41355 was published on 2023-11-03 and last updated on 2026-06-17.

References

https://www.twcert.org.tw/tw/cp-132-7505-a0c94-1.html

Affected products (1)

cpe:2.3:o:nokia:g-040w-q_firmware:g040wqr201207:*:*:*:*:*:*:*

More vulnerabilities in Nokia G-040w-q Firmware

CVE-2023-41351 — Critical (CVSS 9.8): Chunghwa Telecom NOKIA G-040W-Q has a vulnerability of authentication bypass, which allows an unauthenticated remote…
CVE-2023-41353 — High (CVSS 8.8): Chunghwa Telecom NOKIA G-040W-Q has a vulnerability of weak password requirements. A remote attacker with regular user…
CVE-2023-41350 — High (CVSS 7.5): Chunghwa Telecom NOKIA G-040W-Q has a vulnerability of insufficient measures to prevent multiple failed authentication…
CVE-2023-41352 — High (CVSS 7.2): Chunghwa Telecom NOKIA G-040W-Q has a vulnerability of insufficient filtering for user input. A remote attacker with…
CVE-2023-41354 — Medium (CVSS 4.0): Chunghwa Telecom NOKIA G-040W-Q Firewall function does not block ICMP TIMESTAMP requests by default, an unauthenticated…

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