CVE-2026-102212 Opengear IM72XX, CM71XX, ACM70XX - Buffer Overflow

Opengear IM72XX, CM71XX, and ACM70XX firmware 4.8.0 through 5.5.2 contain a heap-based buffer overflow caused by an overlong Content-Disposition name field in multipart/form-data POST requests, letting unauthenticated remote attackers crash the index.cgi process.

CVSS base score 8.4 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/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:P/AU:Y/R:X/V:X/RE:L/U:Red
Published
31 October 2026
Updated
1 November 2026
Weakness
CWE-122

Vendor fix

Update to a firmware version later than 5.5.2 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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