How severe is CVE-2023-24051?

CVE-2023-24051 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-2023-24051 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-24051?

CVE-2023-24051 affects Connectize Ac21000 G6 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-24051?

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-2023-24051 published?

CVE-2023-24051 was published on 2023-12-04 and last updated on 2026-06-17.

CVE-2023-24051

CVE-2023-24051 is a critical-severity vulnerability in Connectize Ac21000 G6 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-307.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-307
Affected product: Connectize Ac21000 G6 Firmware
Published: 2023-12-04
Last modified: 2026-06-17

Description

A client side rate limit issue discovered in Connectize AC21000 G6 641.139.1.1256 allows attackers to gain escalated privileges via brute force style attacks.

Frequently asked questions

What is CVE-2023-24051?: A client side rate limit issue discovered in Connectize AC21000 G6 641.139.1.1256 allows attackers to gain escalated privileges via brute force style attacks.
How severe is CVE-2023-24051?: CVE-2023-24051 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-2023-24051 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-24051?: CVE-2023-24051 affects Connectize Ac21000 G6 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-24051?: 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-2023-24051 published?: CVE-2023-24051 was published on 2023-12-04 and last updated on 2026-06-17.

References

https://research.nccgroup.com/2023/10/19/technical-advisory-multiple-vulnerabilities-in-connectize-g6-ac2100-dual-band-gigabit-wifi-router-cve-2023-24046-cve-2023-24047-cve-2023-24048-cve-2023-24049-cve-2023-24050-cve-2023-24051-cve/

Affected products (1)

cpe:2.3:o:connectize:ac21000_g6_firmware:641.139.1.1256:*:*:*:*:*:*:*

More vulnerabilities in Connectize Ac21000 G6 Firmware

CVE-2023-24052 — Critical (CVSS 9.8): An issue discovered in Connectize AC21000 G6 641.139.1.1256 allows attackers to gain control of the device via the…
CVE-2023-24049 — Critical (CVSS 9.8): An issue was discovered on Connectize AC21000 G6 641.139.1.1256 allows attackers to gain escalated privileges on the…
CVE-2023-24048 — High (CVSS 8.8): Cross Site Request Forgery (CSRF) vulnerability in Connectize AC21000 G6 641.139.1.1256 allows attackers to gain…
CVE-2023-24047 — Medium (CVSS 6.8): An Insecure Credential Management issue discovered in Connectize AC21000 G6 641.139.1.1256 allows attackers to gain…
CVE-2023-24046 — Medium (CVSS 6.8): An issue was discovered on Connectize AC21000 G6 641.139.1.1256 allows attackers to run arbitrary commands via use of a…
CVE-2023-24050 — Medium (CVSS 5.4): Cross Site Scripting (XSS) vulnerability in Connectize AC21000 G6 641.139.1.1256 allows attackers to run arbitrary code…

All CVEs affecting Connectize Ac21000 G6 Firmware →

Other CWE-307 (Improper Restriction of Excessive Authentication Attempts) vulnerabilities

CVE-2026-6853 — Critical (CVSS 9.8): Improper restriction of excessive authentication attempts vulnerability in Başbelen Group Food Cafe Businesses…
CVE-2026-8760 — Critical (CVSS 9.8): The Login with OTP plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including,…
CVE-2020-37228 — Critical (CVSS 9.8): iDS6 DSSPro Digital Signage System 6.2 contains a CAPTCHA security bypass vulnerability that allows attackers to bypass…
CVE-2026-33879 — Critical (CVSS 9.8): Federated Learning and Interoperability Platform (FLIP) is an open-source platform for federated training and…
CVE-2026-33640 — Critical (CVSS 9.8): Outline is a service that allows for collaborative documentation. Outline implements an Email OTP login flow for users…
CVE-2026-31851 — Critical (CVSS 9.8): Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout…

Browse all CWE-307 (Improper Restriction of Excessive Authentication Attempts) vulnerabilities →