What is CVE-2015-2502?

CVE-2015-2502 is a high-severity vulnerability in Microsoft Internet Explorer, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2015-08-19.

How severe is CVE-2015-2502?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2015-2502 known to be exploited?

Yes. CVE-2015-2502 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-04-13), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.

Buffer overflow in Microsoft Internet Explorer

CVE-2015-2502

Microsoft Internet Explorer 7 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Memory Corruption Vulnerability," as exploited in the wild in August 2015.

Vulnerability class: Buffer Overflow

Published 2015-08-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.510 (98.9th percentile), scored 2026-10-18.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 98.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.510 · newest: 0.510 · change: 0.000

Affected products

Microsoft Internet Explorer — versions 7, 8, 9
Microsoft Windows 10 1507
Microsoft Windows 7
Microsoft Windows 8
Microsoft Windows 8.1
Microsoft Windows Rt 8.1
Microsoft Windows Server 2008 — versions r2
Microsoft Windows Server 2012 — versions r2
Microsoft Windows Vista

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-04-13. 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: 2022-05-04.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

www.securitytracker.com/id/1033317 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
twitter.com/Laughing_Mantis/statuses/633839231840841728 (Exploit)
www.securityfocus.com/bid/76403 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
www.securityweek.com/microsoft-issues-emergency-patch-critical-ie-flaw-exploite… (Press/Media Coverage)
twitter.com/Laughing_Mantis/statuses/633839771865886721 (Press/Media Coverage)
docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-093 (vendor-advisory, Patch, Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2015-2502?: CVE-2015-2502 is a high-severity vulnerability in Microsoft Internet Explorer, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2015-08-19.
How severe is CVE-2015-2502?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2015-2502 known to be exploited?: Yes. CVE-2015-2502 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-04-13), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.