How severe is CVE-2023-49255?

CVE-2023-49255 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-2023-49255 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-49255?

CVE-2023-49255 affects Hongdian H8951-4g-esp Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-49255?

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-2023-49255 have an EU (EUVD) identifier?

Yes. CVE-2023-49255 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53257.

When was CVE-2023-49255 published?

CVE-2023-49255 was published on 2024-01-12 and last updated on 2026-06-17.

CVE-2023-49255

CVE-2023-49255 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-53257
Weakness: CWE-306
Affected product: Hongdian H8951-4g-esp Firmware
Published: 2024-01-12
Last modified: 2026-06-17

Description

The router console is accessible without authentication at "data" field, and while a user needs to be logged in in order to modify the configuration, the session state is shared. If any other user is currently logged in, the anonymous user can execute commands in the context of the authenticated one. If the logged in user has administrative privileges, it is possible to use webadmin service configuration commands to create a new admin user with a chosen password.

Frequently asked questions

What is CVE-2023-49255?: The router console is accessible without authentication at "data" field, and while a user needs to be logged in in order to modify the configuration, the session state is shared. If any other user is currently logged in, the anonymous user can execute commands in the context of the authenticated one. If the logged in user has administrative privileges, it is possible to use webadmin service configuration commands to create a new admin user with a chosen password.
How severe is CVE-2023-49255?: CVE-2023-49255 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-2023-49255 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-49255?: CVE-2023-49255 affects Hongdian H8951-4g-esp Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-49255?: 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-2023-49255 have an EU (EUVD) identifier?: Yes. CVE-2023-49255 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53257.
When was CVE-2023-49255 published?: CVE-2023-49255 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:*:*:*:*:*:*:*:*

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