CVE-2022-28737

7.8 highEPSS 0.3%

High (7.8) in redhat shim. EPSS 0.3% chance of exploitation in the next 30 days.

There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code execution is not discarded in such scenario.

Severity

CVSS 3.1

7.8 high

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2023-07-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

redhat:shim

References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28737
https://www.openwall.com/lists/oss-security/2022/06/07/5
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-28737
https://www.openwall.com/lists/oss-security/2022/06/07/5

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