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CVE-2024-7490

Remote Code Execution in Advanced Software Framework DHCP server

Critical9.5EPSS 1.4%
Published
Updated
Reserved
Assigned by
Microchip

Description

Improper Input Validation vulnerability in Microchip Techology Advanced Software Framework example DHCP server can cause remote code execution through a buffer overflow. This vulnerability is associated with program files tinydhcpserver.C and program routines lwip_dhcp_find_option. This issue affects Advanced Software Framework: through 3.52.0.2574. ASF is no longer being supported. Apply provided workaround or migrate to an actively maintained framework.

Scores

CVSS scores of CVE-2024-7490, by who scored it
Scored byCVSSScoreVector
MicrochipCNA (assigner)4.0Critical9.5CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
NVDNVD · Analyzed4.0Critical9.5CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
1.4% · top 28% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.5.

Weakness

Affected products

What to do

Solution: ASF is no longer being supported. Apply provided workaround or migrate to an actively maintained framework.

Workaround: The issue can be mitigated by adding a check to the size variable after the call [1] to pbuf_get_at on line 127 [1]. If the size variable is not 4, then the function should cease processing and return. The lwip_dhcp_find_option function is only used to find this one option. [1] https://github.com/alfred-ai/microchip-asf/blob/bf5205e36a265b867d531647ffbf2de5e287853a/thirdparty/lwip/lwip-tinyservices/tinydhcpserver.c#L127

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .