How severe is CVE-2021-26341?

CVE-2021-26341 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-26341 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26341?

CVE-2021-26341 primarily affects Amd Athlon X4 940 Firmware. In total, 126 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-26341?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-26341 published?

CVE-2021-26341 was published on 2022-03-11 and last updated on 2026-06-17.

CVE-2021-26341

CVE-2021-26341 is a medium-severity vulnerability in Amd Athlon X4 940 Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-212.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-212
Affected product: Amd Athlon X4 940 Firmware
Published: 2022-03-11
Last modified: 2026-06-17

Description

Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage.

Frequently asked questions

What is CVE-2021-26341?: Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage.
How severe is CVE-2021-26341?: CVE-2021-26341 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-26341 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26341?: CVE-2021-26341 primarily affects Amd Athlon X4 940 Firmware. In total, 126 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-26341?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-26341 published?: CVE-2021-26341 was published on 2022-03-11 and last updated on 2026-06-17.

References

Affected products (126)

cpe:2.3:o:amd:athlon_x4_940_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_x4_950_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_x4_970_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_x4_835_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_x4_845_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_x4_830_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_x4_840_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_x4_860k_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_x4_870k_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_x4_880k_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_x4_750_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_x4_760k_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_threadripper_pro_5995wx_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_threadripper_pro_5975wx_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_threadripper_pro_5965wx_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_threadripper_pro_5955wx_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_threadripper_pro_5945wx_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_threadripper_2990wx_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_threadripper_2970wx_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_threadripper_2950x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_threadripper_2920x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_threadripper_3970x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:a12-9730p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:a12-9700p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:a10-9630p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:a10-9600p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:a9-9420_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:a9-9410_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:a6-9220_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:a6-9220c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:a6-9210_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:a4-9120_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_2700x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_2700_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_2600x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_2600_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_3950x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_9_3900x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3800x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3700x_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Amd Athlon X4 940 Firmware

CVE-2022-23825 — Medium (CVSS 6.5): Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to…
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CVE-2022-23823 — Medium (CVSS 6.5): A potential vulnerability in some AMD processors using frequency scaling may allow an authenticated attacker to execute…
CVE-2021-26401 — Medium (CVSS 5.6): LFENCE/JMP (mitigation V2-2) may not sufficiently mitigate CVE-2017-5715 on some AMD CPUs.
CVE-2022-23824 — Medium (CVSS 5.5): IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential…
CVE-2022-27672 — Medium (CVSS 4.7): When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling…

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