CVE-2021-34480

Medium (6.8) in microsoft. EPSS 34% chance of exploitation in the next 30 days.

EPSS

34% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)

CWE

CWE-787

Published

2021-08-12

Modified

2026-08-10

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:windows_10
• microsoft:windows_7
• microsoft:windows_8.1
• microsoft:windows_rt_8.1
• microsoft:windows_server_2008
• microsoft:windows_server_2012
• microsoft:windows_server_2016
• microsoft:windows_server_2019

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34480
• http://packetstormsecurity.com/files/164121/Internet-Explorer-JIT-Optimization-Memory-Corruption.html
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34480

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