CVE-2023-49259

Q: How do I fix CVE-2023-49259?

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

Q: Is CVE-2023-49259 being actively exploited?

Not that we know of. CVE-2023-49259 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.30% is the estimated probability that it will be exploited in the next 30 days. That is higher than 23% of all scored CVEs.

Q: How severe is CVE-2023-49259?

CVE-2023-49259 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2023-49259 affect?

Published advisories record a fix for h8951-4g-esp firmware (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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

23rdpercentile

Low risk: more likely to be exploited than 23% of all known CVEs.

References

Third-Party Advisory2

Related Vulnerabilities

Other CWE-341 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-6563	Critical	9.8	1.7%	-	-
CVE-2020-1731	Critical	9.1	1.3%	-	Fix
CVE-2018-17917	Medium	5.3	1.3%	-	-
CVE-2020-5365	Medium	5.3	1.0%	-	-
CVE-2024-10141	Low	3.7	0.8%	-	-
CVE-2025-40780	High	8.6	0.5%	-	Fix

Common questions

How do I fix CVE-2023-49259?

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

Is CVE-2023-49259 being actively exploited?

Not that we know of. CVE-2023-49259 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.30% is the estimated probability that it will be exploited in the next 30 days. That is higher than 23% of all scored CVEs.

How severe is CVE-2023-49259?

CVE-2023-49259 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2023-49259 affect?

Published advisories record a fix for h8951-4g-esp firmware (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2023-49259

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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.