How severe is CVE-2023-44418?

CVE-2023-44418 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-44418 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-44418?

CVE-2023-44418 affects Dlink Dir-x3260 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-44418?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-44418 have an EU (EUVD) identifier?

Yes. CVE-2023-44418 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-48758.

When was CVE-2023-44418 published?

CVE-2023-44418 was published on 2024-05-03 and last updated on 2026-06-17.

CVE-2023-44418

CVE-2023-44418 is a high-severity vulnerability in Dlink Dir-x3260 Firmware with a CVSS 3.x base score of 8.8. 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-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-48758
Weakness: CWE-787
Affected product: Dlink Dir-x3260 Firmware
Published: 2024-05-03
Last modified: 2026-06-17

Description

D-Link DIR-X3260 Prog.cgi Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code 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 binary, which handles HNAP requests made to the lighttpd webserver. The issue results from the lack of proper validation of the length an user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-20727.

Frequently asked questions

What is CVE-2023-44418?: D-Link DIR-X3260 Prog.cgi Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code 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 binary, which handles HNAP requests made to the lighttpd webserver. The issue results from the lack of proper validation of the length an user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-20727.
How severe is CVE-2023-44418?: CVE-2023-44418 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-44418 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-44418?: CVE-2023-44418 affects Dlink Dir-x3260 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-44418?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-44418 have an EU (EUVD) identifier?: Yes. CVE-2023-44418 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-48758.
When was CVE-2023-44418 published?: CVE-2023-44418 was published on 2024-05-03 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-23-1516/

Affected products (1)

cpe:2.3:o:dlink:dir-x3260_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-x3260 Firmware

CVE-2023-44420 — High (CVSS 8.8): D-Link DIR-X3260 prog.cgi Incorrect Implementation of Authentication Algorithm Authentication Bypass Vulnerability.…
CVE-2023-44419 — High (CVSS 8.8): D-Link DIR-X3260 Prog.cgi Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows…
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