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Vulnerability Intelligence

CVE-2015-6058

Medium

Microsoft Edge mishandles HTML attributes in HTTP responses, which allows remote attackers to bypass a cross-site scripting (XSS) protection mechanism via unspecified vectors, aka "Microsoft Edge XSS Filter Bypass."

Published Oct 13, 2015 · Updated May 6, 2026

Key Facts

Patch immediately
  • CVE-2015-6058 is a medium-severity vulnerability (CVSS 4.3 v2) affecting Edge (Microsoft).
  • It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
  • EPSS estimates a 70% probability of exploitation in the next 30 days.
  • No fixed version is listed yet; check the vendor advisory for mitigations.
  • Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

4.3

AV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS (30-day exploit likelihood)

70%

Higher than 99.3% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

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Description

Microsoft Edge mishandles HTML attributes in HTTP responses, which allows remote attackers to bypass a cross-site scripting (XSS) protection mechanism via unspecified vectors, aka "Microsoft Edge XSS Filter Bypass."

Affected Products

1 affected entries in total
ProductAffected versionsFixed in
EdgeMicrosoftSee advisoryn/a

Timeline

  1. Publicly disclosed

    Oct 13, 2015

  2. Last updated

    May 6, 2026

Weakness Type

  • CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

FAQ

Common Questions.

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