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CVE-2020-12954

A side effect of an integrated chipset option may be able to be used by an attacker to bypass SPI...

5.5 Medium

A side effect of an integrated chipset option may be able to be used by an attacker to bypass SPI ROM protections, allowing unauthorized SPI ROM modification.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

0.23%Down 0.2 points since Nov 17, 2021
90%50%10%1%

What each source reports

NVD Score used 5.5

A side effect of an integrated chipset option may be able to be used by an attacker to bypass SPI ROM protections, allowing unauthorized SPI ROM modification.

Record
CVE-2020-12954
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0
2.1 LowAV:L/AC:L/Au:N/C:N/I:P/A:N
Weakness
CWE-693
Updated
2026-11-02
CVE List No score

A side effect of an integrated chipset option may be able to be used by an attacker to bypass SPI ROM protections, allowing unauthorized SPI ROM modification.

Record
CVE-2020-12954
Weakness
CWE-693
Updated
2026-11-02
EUVDEUVD-2020-5234 No score

A side effect of an integrated chipset option may be able to be used by an attacker to bypass SPI ROM protections, allowing unauthorized SPI ROM modification.

Record
EUVD-2020-5234
Updated
2026-11-03
GitHub AdvisoriesGHSA-rjfc-fv4g-m58q 5.5

A side effect of an integrated chipset option may be able to be used by an attacker to bypass SPI...

A side effect of an integrated chipset option may be able to be used by an attacker to bypass SPI ROM protections, allowing unauthorized SPI ROM modification.

Record
GHSA-rjfc-fv4g-m58q
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-863
Updated
2026-11-02

Affected products

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History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD

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

In short

CVE-2020-12954 is a medium vulnerability (CVSS 5.5) in Amd 1st Gen Amd Epyc™, published November 16, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 14th percentile. No source names a fixed version.

References

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