Vulnerability · Published Sep 22, 2022 · Assigned by mitre

CVE-2022-35408

High 8.2

In plain English

A high-severity security flaw in the affected software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.4%top 69.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

Weakness: CWE-123 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References

https://www.insyde.com/security-pledge x_refsource_MISC
https://www.insyde.com/security-pledge/SA-2022031 x_refsource_MISC
https://binarly.io/advisories/BRLY-2022-022/index.html x_refsource_MISC