Medium severity · published Jun 9, 2021
CVE-2021-26313
Potential speculative code store bypass in all supported CPU products, in conjunction with software vulnerabilities relating to speculative execution of overwritten instructions,…
5.5
CVSS
0.3%
EPSS
No
On KEV
Description
Potential speculative code store bypass in all supported CPU products, in conjunction with software vulnerabilities relating to speculative execution of overwritten instructions, may cause an incorrect speculation and could result in data leakage.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BC
Bcm2711 · Broadcom
All versions, or not specified · source: NVD
CI
Core I7-10700k · Intel
All versions, or not specified · source: NVD
CI
Core I7-7700k · Intel
All versions, or not specified · source: NVD
CI
Core I9-9900k · Intel
All versions, or not specified · source: NVD
CO
Cortex-a72 · Arm
All versions, or not specified · source: NVD
DL
Debian Linux · Debian
10.0 · source: NVD
XE
Xen · Xen
All versions, or not specified · source: NVD
XS
Xeon Silver 4214 · Intel
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26313
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26313
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1003
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