CVE-2021-26365

Certain size values in firmware binary headers could trigger out of bounds reads during signature...

8.2 High

Certain size values in firmware binary headers could trigger out of bounds reads during signature validation, leading to denial of service or potentially limited leakage of information about out-of-bounds memory contents.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: High

Exploit likelihood

0.57%Up 0.5 points since May 10, 2023

What each source reports

NVD Score used 8.2

Record: CVE-2021-26365
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

CVE List 8.2

Record: CVE-2021-26365
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

EUVDEUVD-2021-13171 8.2

Record: EUVD-2021-13171
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-49q9-hj6w-v395 8.2

Certain size values in firmware binary headers could trigger out of bounds reads during signature...

Record: GHSA-49q9-hj6w-v395
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-26365 is a high vulnerability (CVSS 8.2) in Amd 3015ce Firmware, published May 9, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.57%, the 47th percentile. No source names a fixed version.