How severe is CVE-2023-49262?

CVE-2023-49262 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-2023-49262 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-49262?

CVE-2023-49262 affects Hongdian H8951-4g-esp Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-49262?

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.

Does CVE-2023-49262 have an EU (EUVD) identifier?

Yes. CVE-2023-49262 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53264.

When was CVE-2023-49262 published?

CVE-2023-49262 was published on 2024-01-12 and last updated on 2026-06-17.

CVE-2023-49262

CVE-2023-49262 is a critical-severity vulnerability in Hongdian H8951-4g-esp 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-53264
Weakness: CWE-287
Affected product: Hongdian H8951-4g-esp Firmware
Published: 2024-01-12
Last modified: 2026-06-17

Description

The authentication mechanism can be bypassed by overflowing the value of the Cookie "authentication" field, provided there is an active user session.

Frequently asked questions

What is CVE-2023-49262?: The authentication mechanism can be bypassed by overflowing the value of the Cookie "authentication" field, provided there is an active user session.
How severe is CVE-2023-49262?: CVE-2023-49262 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-2023-49262 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-49262?: CVE-2023-49262 affects Hongdian H8951-4g-esp Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-49262?: 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.
Does CVE-2023-49262 have an EU (EUVD) identifier?: Yes. CVE-2023-49262 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53264.
When was CVE-2023-49262 published?: CVE-2023-49262 was published on 2024-01-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:hongdian:h8951-4g-esp_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Hongdian H8951-4g-esp Firmware

CVE-2023-49255 — Critical (CVSS 9.8): The router console is accessible without authentication at "data" field, and while a user needs to be logged in in…
CVE-2023-49253 — Critical (CVSS 9.8): Root user password is hardcoded into the device and cannot be changed in the user interface.
CVE-2023-49257 — High (CVSS 8.8): An authenticated user is able to upload an arbitrary CGI-compatible file using the certificate upload utility and…
CVE-2023-49254 — High (CVSS 8.8): Authenticated user can execute arbitrary commands in the context of the root user by providing payload in the…
CVE-2023-49261 — High (CVSS 7.5): The "tokenKey" value used in user authorization is visible in the HTML source of the login page.
CVE-2023-49259 — High (CVSS 7.5): The authentication cookies are generated using an algorithm based on the username, hardcoded secret and the up-time,…

All CVEs affecting Hongdian H8951-4g-esp Firmware →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →