CVE-2015-6058
MediumMicrosoft 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| Product | Affected versions | Fixed in |
|---|---|---|
| EdgeMicrosoft | See advisory | n/a |
Timeline
Publicly disclosed
Oct 13, 2015
Last updated
May 6, 2026
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
FAQ
Common Questions.
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: Edge (Microsoft). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
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.
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