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Fencer Vulns
medium 6.1

CVE-2021-34506 json

Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

published 2023-06-30 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21160

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

Patch / fix

  • Microsoft Microsoft Edge (Chromium-based) 91.0.864.59

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

2.21% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

  • Microsoft Microsoft Edge (Chromium-based)

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.