Is CVE-2023-49259 in the CISA KEV catalog?

No. CVE-2023-49259 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-49259?

CVE-2023-49259 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2023-49259?

CVE-2023-49259 has an EPSS score of 0.30% (22th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-49259?

Upgrade h8951-4g-esp firmware to 2310271149 or later.

CVE & CISA-KEV Catalog

CVE-2023-49259

HIGH

7.5

CVSS v3

NVD

Description

The authentication cookies are generated using an algorithm based on the username, hardcoded secret and the up-time, and can be guessed in a reasonable time.

CWE-341 CWE-327

How to fix

Remediation Available

h8951-4g-esp firmwareNVD

Affected:< 2310271149Fixed in:2310271149CVE-2023-49259derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.30%probability of exploitation in 30 days

22ndpercentile

Low risk: more likely to be exploited than 22% of all known CVEs.

References

Third-Party Advisory2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-06-20.