How severe is CVE-2023-49253?

CVE-2023-49253 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-2023-49253 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-49253?

CVE-2023-49253 affects Hongdian H8951-4g-esp Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-49253?

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-2023-49253 have an EU (EUVD) identifier?

Yes. CVE-2023-49253 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53255.

When was CVE-2023-49253 published?

CVE-2023-49253 was published on 2024-01-12 and last updated on 2026-06-17.

CVE-2023-49253

CVE-2023-49253 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-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-53255
Weakness: CWE-798
Affected product: Hongdian H8951-4g-esp Firmware
Published: 2024-01-12
Last modified: 2026-06-17

Description

Root user password is hardcoded into the device and cannot be changed in the user interface.

Frequently asked questions

What is CVE-2023-49253?: Root user password is hardcoded into the device and cannot be changed in the user interface.
How severe is CVE-2023-49253?: CVE-2023-49253 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-2023-49253 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-49253?: CVE-2023-49253 affects Hongdian H8951-4g-esp Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-49253?: 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-2023-49253 have an EU (EUVD) identifier?: Yes. CVE-2023-49253 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-53255.
When was CVE-2023-49253 published?: CVE-2023-49253 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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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,…

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