What is CVE-2021-26377?

CVE-2021-26377 is a medium-severity vulnerability in Amd Athlon™ 3000 Series Mobile Processors With Radeon™ Graphics, classified under Integer Overflow or Wraparound. CVSS score: 4.1/10. Published 2025-09-06.

How severe is CVE-2021-26377?

Medium severity. CVSS v3 base score is 4.1 out of 10.

Is CVE-2021-26377 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Integer overflow in Amd Athlon™ 3000 Series Mobile Processors With Radeon™ Graphics

CVE-2021-26377

Insufficient parameter validation while allocating process space in the Trusted OS (TOS) may allow for a malicious userspace process to trigger an integer overflow, leading to a potential denial of service.

Vulnerability class: Integer Overflow

EPSS: 0.000 (5.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H.

Affected products

Amd Athlon™ 3000 Series Mobile Processors With Radeon™ Graphics — versions PicassoPI-FP5 1.0.0.E, PollockPI-FT5 1.0.0.4
Amd Radeon™ Instinct™ Mi25 Graphics Products — versions Contact your AMD Customer Engineering representative
Amd Radeon™ Pro V520 Graphics Products — versions Contact your AMD Customer Engineering representative
Amd Radeon™ Pro V620 Graphics Products — versions Contact your AMD Customer Engineering representative
Amd Radeon™ Pro W5000 Series Graphics Products — versions AMD Software: PRO Edition 24.Q2 (24.10.20)
Amd Radeon™ Pro W6000 Series Graphics Products — versions AMD Software: PRO Edition 24.Q2 (24.10.20)
Amd Radeon™ Rx 5000 Series Graphics Products — versions AMD Software: Adrenalin Edition 24.7.1 (24.10.29.01), AMD Software: PRO Edition 24.Q2 (24.10.20)
Amd Radeon™ Rx 6000 Series Graphics Products — versions AMD Software: Adrenalin Edition 24.7.1 (24.10.29.01), AMD Software: PRO Edition 24.Q2 (24.10.20)
Amd Ryzen™ 3000 Series Desktop Processors — versions ComboAM4PI 1.0.0.9/ ComboAM4 V2 PI 1.2.0.8
Amd Ryzen™ 4000 Series Desktop Processors — versions ComboAM4v2 PI 1.2.0.5

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2021-26377?: CVE-2021-26377 is a medium-severity vulnerability in Amd Athlon™ 3000 Series Mobile Processors With Radeon™ Graphics, classified under Integer Overflow or Wraparound. CVSS score: 4.1/10. Published 2025-09-06.
How severe is CVE-2021-26377?: Medium severity. CVSS v3 base score is 4.1 out of 10.
Is CVE-2021-26377 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.