Vulnerability Details CVE-2021-26339
A bug in AMD CPU’s core logic may allow for an attacker, using specific code from an unprivileged VM, to trigger a CPU core hang resulting in a potential denial of service. AMD believes the specific code includes a specific x86 instruction sequence that would not be generated by compilers.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 12.5%
CVSS Severity
CVSS v3 Score 5.5
CVSS v2 Score 4.9
Products affected by CVE-2021-26339
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cpe:2.3:h:amd:epyc_72f3:-
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cpe:2.3:h:amd:epyc_7313:-
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cpe:2.3:h:amd:epyc_7313p:-
-
cpe:2.3:h:amd:epyc_7343:-
-
cpe:2.3:h:amd:epyc_7373x:-
-
cpe:2.3:h:amd:epyc_73f3:-
-
cpe:2.3:h:amd:epyc_7413:-
-
cpe:2.3:h:amd:epyc_7443:-
-
cpe:2.3:h:amd:epyc_7443p:-
-
cpe:2.3:h:amd:epyc_7453:-
-
cpe:2.3:h:amd:epyc_7473x:-
-
cpe:2.3:h:amd:epyc_74f3:-
-
cpe:2.3:h:amd:epyc_7513:-
-
cpe:2.3:h:amd:epyc_7543:-
-
cpe:2.3:h:amd:epyc_7543p:-
-
cpe:2.3:h:amd:epyc_7573x:-
-
cpe:2.3:h:amd:epyc_75f3:-
-
cpe:2.3:h:amd:epyc_7643:-
-
cpe:2.3:h:amd:epyc_7663:-
-
cpe:2.3:h:amd:epyc_7713:-
-
cpe:2.3:h:amd:epyc_7713p:-
-
cpe:2.3:h:amd:epyc_7763:-
-
cpe:2.3:h:amd:epyc_7773x:-
-
cpe:2.3:h:amd:ryzen_3_2200u:-
-
cpe:2.3:h:amd:ryzen_3_2300u:-
-
cpe:2.3:h:amd:ryzen_3_3100:-
-
cpe:2.3:h:amd:ryzen_3_3300g:-
-
cpe:2.3:h:amd:ryzen_3_3300x:-
-
cpe:2.3:h:amd:ryzen_3_4300g:-
-
cpe:2.3:h:amd:ryzen_3_4300ge:-
-
cpe:2.3:h:amd:ryzen_3_5125c:-
-
cpe:2.3:h:amd:ryzen_3_5300g:-
-
cpe:2.3:h:amd:ryzen_3_5300ge:-
-
cpe:2.3:h:amd:ryzen_3_5400u:-
-
cpe:2.3:h:amd:ryzen_3_5425c:-
-
cpe:2.3:h:amd:ryzen_3_5425u:-
-
cpe:2.3:h:amd:ryzen_3_pro_2300u:-
-
cpe:2.3:h:amd:ryzen_3_pro_3300u:-
-
cpe:2.3:h:amd:ryzen_5_2500u:-
-
cpe:2.3:h:amd:ryzen_5_2600h:-
-
cpe:2.3:h:amd:ryzen_5_3400g:-
-
cpe:2.3:h:amd:ryzen_5_3450g:-
-
cpe:2.3:h:amd:ryzen_5_3600:-
-
cpe:2.3:h:amd:ryzen_5_3600x:-
-
cpe:2.3:h:amd:ryzen_5_4600g:-
-
cpe:2.3:h:amd:ryzen_5_4600ge:-
-
cpe:2.3:h:amd:ryzen_5_5560u:-
-
cpe:2.3:h:amd:ryzen_5_5600h:-
-
cpe:2.3:h:amd:ryzen_5_5600hs:-
-
cpe:2.3:h:amd:ryzen_5_5600u:-
-
cpe:2.3:h:amd:ryzen_5_5625c:-
-
cpe:2.3:h:amd:ryzen_5_5625u:-
-
cpe:2.3:h:amd:ryzen_5_5700g:-
-
cpe:2.3:h:amd:ryzen_5_5700ge:-
-
cpe:2.3:h:amd:ryzen_5_pro_2500u:-
-
cpe:2.3:h:amd:ryzen_5_pro_3500u:-
-
cpe:2.3:h:amd:ryzen_7_2700u:-
-
cpe:2.3:h:amd:ryzen_7_2800h:-
-
cpe:2.3:h:amd:ryzen_7_3700x:-
-
cpe:2.3:h:amd:ryzen_7_3800x:-
-
cpe:2.3:h:amd:ryzen_7_4700g:-
-
cpe:2.3:h:amd:ryzen_7_4700ge:-
-
cpe:2.3:h:amd:ryzen_7_5700g:-
-
cpe:2.3:h:amd:ryzen_7_5700ge:-
-
cpe:2.3:h:amd:ryzen_7_5800h:-
-
cpe:2.3:h:amd:ryzen_7_5800hs:-
-
cpe:2.3:h:amd:ryzen_7_5800u:-
-
cpe:2.3:h:amd:ryzen_7_5825c:-
-
cpe:2.3:h:amd:ryzen_7_5825u:-
-
cpe:2.3:h:amd:ryzen_7_pro_2700u:-
-
cpe:2.3:h:amd:ryzen_7_pro_3700u:-
-
cpe:2.3:h:amd:ryzen_9_5900hs:-
-
cpe:2.3:h:amd:ryzen_9_5900hx:-
-
cpe:2.3:h:amd:ryzen_9_5980hs:-
-
cpe:2.3:h:amd:ryzen_9_5980hx:-
-
cpe:2.3:h:amd:ryzen_threadripper_pro_3945wx:-
-
cpe:2.3:h:amd:ryzen_threadripper_pro_3955wx:-
-
cpe:2.3:h:amd:ryzen_threadripper_pro_3975wx:-
-
cpe:2.3:h:amd:ryzen_threadripper_pro_3995wx:-
-
cpe:2.3:h:amd:ryzen_threadripper_pro_5945wx:-
-
cpe:2.3:h:amd:ryzen_threadripper_pro_5955wx:-
-
cpe:2.3:h:amd:ryzen_threadripper_pro_5965wx:-
-
cpe:2.3:h:amd:ryzen_threadripper_pro_5975wx:-
-
cpe:2.3:h:amd:ryzen_threadripper_pro_5995wx:-
-
cpe:2.3:o:amd:epyc_72f3_firmware:-
-
cpe:2.3:o:amd:epyc_72f3_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_72f3_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7313_firmware:-
-
cpe:2.3:o:amd:epyc_7313_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7313_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7313p_firmware:-
-
cpe:2.3:o:amd:epyc_7313p_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7313p_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7343_firmware:-
-
cpe:2.3:o:amd:epyc_7343_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7343_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7373x_firmware:-
-
cpe:2.3:o:amd:epyc_73f3_firmware:-
-
cpe:2.3:o:amd:epyc_73f3_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_73f3_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7413_firmware:-
-
cpe:2.3:o:amd:epyc_7413_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7413_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7443_firmware:-
-
cpe:2.3:o:amd:epyc_7443_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7443_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7443p_firmware:-
-
cpe:2.3:o:amd:epyc_7443p_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7443p_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7453_firmware:-
-
cpe:2.3:o:amd:epyc_7453_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7453_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7473x_firmware:-
-
cpe:2.3:o:amd:epyc_74f3_firmware:-
-
cpe:2.3:o:amd:epyc_74f3_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_74f3_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7513_firmware:-
-
cpe:2.3:o:amd:epyc_7513_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7513_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7543_firmware:-
-
cpe:2.3:o:amd:epyc_7543_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7543_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7543p_firmware:-
-
cpe:2.3:o:amd:epyc_7543p_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7543p_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7573x_firmware:-
-
cpe:2.3:o:amd:epyc_75f3_firmware:-
-
cpe:2.3:o:amd:epyc_75f3_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_75f3_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7643_firmware:-
-
cpe:2.3:o:amd:epyc_7643_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7643_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7663_firmware:-
-
cpe:2.3:o:amd:epyc_7663_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7663_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7713_firmware:-
-
cpe:2.3:o:amd:epyc_7713_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7713_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7713p_firmware:-
-
cpe:2.3:o:amd:epyc_7713p_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7713p_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7763_firmware:-
-
cpe:2.3:o:amd:epyc_7763_firmware:milanpi-sp3_1.0.0.4
-
cpe:2.3:o:amd:epyc_7763_firmware:milanpi-sp3_1.0.0.5
-
cpe:2.3:o:amd:epyc_7773x_firmware:-
-
cpe:2.3:o:amd:ryzen_3_2200u_firmware:-
-
cpe:2.3:o:amd:ryzen_3_2300u_firmware:-
-
cpe:2.3:o:amd:ryzen_3_3100_firmware:-
-
cpe:2.3:o:amd:ryzen_3_3300g_firmware:-
-
cpe:2.3:o:amd:ryzen_3_3300x_firmware:-
-
cpe:2.3:o:amd:ryzen_3_4300g_firmware:-
-
cpe:2.3:o:amd:ryzen_3_4300ge_firmware:-
-
cpe:2.3:o:amd:ryzen_3_5125c_firmware:-
-
cpe:2.3:o:amd:ryzen_3_5125c_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_3_5125c_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_3_5300g_firmware:-
-
cpe:2.3:o:amd:ryzen_3_5300ge_firmware:-
-
cpe:2.3:o:amd:ryzen_3_5400u_firmware:-
-
cpe:2.3:o:amd:ryzen_3_5400u_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_3_5400u_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_3_5425c_firmware:-
-
cpe:2.3:o:amd:ryzen_3_5425c_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_3_5425c_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_3_5425u_firmware:-
-
cpe:2.3:o:amd:ryzen_3_5425u_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_3_5425u_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_3_pro_2300u_firmware:-
-
cpe:2.3:o:amd:ryzen_3_pro_3300u_firmware:-
-
cpe:2.3:o:amd:ryzen_5_2500u_firmware:-
-
cpe:2.3:o:amd:ryzen_5_2600h_firmware:-
-
cpe:2.3:o:amd:ryzen_5_3400g_firmware:-
-
cpe:2.3:o:amd:ryzen_5_3450g_firmware:-
-
cpe:2.3:o:amd:ryzen_5_3600_firmware:-
-
cpe:2.3:o:amd:ryzen_5_3600x_firmware:-
-
cpe:2.3:o:amd:ryzen_5_4600g_firmware:-
-
cpe:2.3:o:amd:ryzen_5_4600ge_firmware:-
-
cpe:2.3:o:amd:ryzen_5_5560u_firmware:-
-
cpe:2.3:o:amd:ryzen_5_5560u_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_5_5560u_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_5_5600h_firmware:-
-
cpe:2.3:o:amd:ryzen_5_5600h_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_5_5600h_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_5_5600hs_firmware:-
-
cpe:2.3:o:amd:ryzen_5_5600hs_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_5_5600hs_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_5_5600u_firmware:-
-
cpe:2.3:o:amd:ryzen_5_5600u_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_5_5600u_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_5_5625c_firmware:-
-
cpe:2.3:o:amd:ryzen_5_5625c_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_5_5625c_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_5_5625u_firmware:-
-
cpe:2.3:o:amd:ryzen_5_5625u_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_5_5625u_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_5_5700g_firmware:-
-
cpe:2.3:o:amd:ryzen_5_5700g_firmware:cezannepi-fp6_1.0.0.b
-
cpe:2.3:o:amd:ryzen_5_5700ge_firmware:-
-
cpe:2.3:o:amd:ryzen_5_5700ge_firmware:cezannepi-fp6_1.0.0.b
-
cpe:2.3:o:amd:ryzen_5_pro_2500u_firmware:-
-
cpe:2.3:o:amd:ryzen_5_pro_3500u_firmware:-
-
cpe:2.3:o:amd:ryzen_7_2700u_firmware:-
-
cpe:2.3:o:amd:ryzen_7_2800h_firmware:-
-
cpe:2.3:o:amd:ryzen_7_3700x_firmware:-
-
cpe:2.3:o:amd:ryzen_7_3800x_firmware:-
-
cpe:2.3:o:amd:ryzen_7_4700g_firmware:-
-
cpe:2.3:o:amd:ryzen_7_4700ge_firmware:-
-
cpe:2.3:o:amd:ryzen_7_5700g_firmware:-
-
cpe:2.3:o:amd:ryzen_7_5700ge_firmware:-
-
cpe:2.3:o:amd:ryzen_7_5800h_firmware:-
-
cpe:2.3:o:amd:ryzen_7_5800h_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_7_5800h_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_7_5800hs_firmware:-
-
cpe:2.3:o:amd:ryzen_7_5800hs_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_7_5800hs_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_7_5800u_firmware:-
-
cpe:2.3:o:amd:ryzen_7_5800u_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_7_5800u_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_7_5825c_firmware:-
-
cpe:2.3:o:amd:ryzen_7_5825c_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_7_5825c_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_7_5825u_firmware:-
-
cpe:2.3:o:amd:ryzen_7_5825u_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_7_5825u_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_7_pro_2700u_firmware:-
-
cpe:2.3:o:amd:ryzen_7_pro_3700u_firmware:-
-
cpe:2.3:o:amd:ryzen_9_5900hs_firmware:-
-
cpe:2.3:o:amd:ryzen_9_5900hs_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_9_5900hs_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_9_5900hx_firmware:-
-
cpe:2.3:o:amd:ryzen_9_5900hx_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_9_5900hx_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_9_5980hs_firmware:-
-
cpe:2.3:o:amd:ryzen_9_5980hs_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_9_5980hs_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_9_5980hx_firmware:-
-
cpe:2.3:o:amd:ryzen_9_5980hx_firmware:cezannepi-fp6_1.0.0.6
-
cpe:2.3:o:amd:ryzen_9_5980hx_firmware:cezannepi-fp6_1.0.0.9
-
cpe:2.3:o:amd:ryzen_threadripper_pro_3945wx_firmware:-
-
cpe:2.3:o:amd:ryzen_threadripper_pro_3945wx_firmware:castlepeakpi-sp3r2_1.1.0.8
-
cpe:2.3:o:amd:ryzen_threadripper_pro_3945wx_firmware:castlepeakwspi-swrx8_1.0.0.9
-
cpe:2.3:o:amd:ryzen_threadripper_pro_3945wx_firmware:castlepeakwspi-swrx8_1.0.0.a
-
cpe:2.3:o:amd:ryzen_threadripper_pro_3945wx_firmware:chagallwspi-swrx8_1.0.0.4
-
cpe:2.3:o:amd:ryzen_threadripper_pro_3945wx_firmware:chagallwspi-swrx8_1.0.0.5
-
cpe:2.3:o:amd:ryzen_threadripper_pro_3955wx_firmware:-
-
cpe:2.3:o:amd:ryzen_threadripper_pro_3975wx_firmware:-
-
cpe:2.3:o:amd:ryzen_threadripper_pro_3995wx_firmware:-
-
cpe:2.3:o:amd:ryzen_threadripper_pro_5945wx_firmware:-
-
cpe:2.3:o:amd:ryzen_threadripper_pro_5955wx_firmware:-
-
cpe:2.3:o:amd:ryzen_threadripper_pro_5965wx_firmware:-
-
cpe:2.3:o:amd:ryzen_threadripper_pro_5975wx_firmware:-
-
cpe:2.3:o:amd:ryzen_threadripper_pro_5995wx_firmware:-