Is CVE-2023-44420 in the CISA KEV catalog?

No. CVE-2023-44420 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-44420?

CVE-2023-44420 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2023-44420?

CVE-2023-44420 has an EPSS score of 0.90% (55th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-44420?

Upgrade dir-x3260 firmware to 1.04b01 or later.

CVE & CISA-KEV Catalog

CVE-2023-44420

HIGH

8.8

CVSS v3

NVD

Description

D-Link DIR-X3260 prog.cgi Incorrect Implementation of Authentication Algorithm Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-X3260 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the prog.cgi executable. The issue results from an incorrect implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the device. Was ZDI-CAN-21100.

CWE-303

How to fix

Remediation Available

dir-x3260 firmwareNVD

Affected:< 1.04b01Fixed in:1.04b01CVE-2023-44420derived 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 VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.90%probability of exploitation in 30 days

55thpercentile

Moderate risk: more likely to be exploited than 55% of all known CVEs.

References

Third-Party Advisory1

zerodayinitiative.com

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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 2025-05-13.