How severe is CVE-2015-0071?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2015-0071 known to be exploited?

Yes. CVE-2015-0071 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-05-25), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.

Vulnerability in Microsoft Internet Explorer

CVE-2015-0071

Microsoft Internet Explorer 9 through 11 allows remote attackers to bypass the ASLR protection mechanism via a crafted web site, aka "Internet Explorer ASLR Bypass Vulnerability."

Published 2015-02-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.336 (98.4th percentile), scored 2026-10-18.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.336 · newest: 0.336 · change: 0.000

Affected products

Microsoft Internet Explorer — versions 9, 10, 11
Microsoft Windows 7
Microsoft Windows 8
Microsoft Windows 8.1
Microsoft Windows Rt
Microsoft Windows Rt 8.1
Microsoft Windows Server 2008 — versions r2
Microsoft Windows Server 2012 — versions r2
Microsoft Windows Vista

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-05-25. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-06-15.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

www.securitytracker.com/id/1031723 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-009 (vendor-advisory, Patch, Vendor Advisory)
www.securityfocus.com/bid/72455 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2015-0071?: CVE-2015-0071 is a medium-severity vulnerability in Microsoft Internet Explorer. CVSS score: 6.5/10. Published 2015-02-11.
How severe is CVE-2015-0071?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2015-0071 known to be exploited?: Yes. CVE-2015-0071 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-05-25), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.