CVE-2024-5293

CVE-2024-5293 is a high-severity vulnerability in Dlink Dir-2640 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-121.

Key facts

Description

D-Link DIR-2640 HTTP Referer Stack-Based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-2640-US routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within prog.cgi, which handles HNAP requests made to the lighttpd webserver listening on TCP ports 80 and 443. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21853.

Frequently asked questions

What is CVE-2024-5293?
D-Link DIR-2640 HTTP Referer Stack-Based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DIR-2640-US routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within prog.cgi, which handles HNAP requests made to the lighttpd webserver listening on TCP ports 80 and 443. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21853.
How severe is CVE-2024-5293?
CVE-2024-5293 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-2024-5293 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-5293?
CVE-2024-5293 affects Dlink Dir-2640 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-5293?
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-2024-5293 have an EU (EUVD) identifier?
Yes. CVE-2024-5293 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-46529.
When was CVE-2024-5293 published?
CVE-2024-5293 was published on 2024-05-23 and last updated on 2026-06-17.

References

Affected products (1)

More vulnerabilities in Dlink Dir-2640 Firmware

All CVEs affecting Dlink Dir-2640 Firmware →

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities

Browse all CWE-121 (Stack-based Buffer Overflow) vulnerabilities →