CVSS base score: 8.8 (High) CISA · v3.1
Score assigned by CISA's Vulnrichment program; the vendor's CVE record did not include one.
Microsoft Internet Explorer Use-After-Free Vulnerability
Vendor: Microsoft Product: Internet Explorer
Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code via vectors involving access to an invalid pointer after the deletion of an object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.
Each milestone comes from a different source, so gaps between them are gaps in what those sources publish, not evidence that nothing happened. EPSS history for this CVE holds 254 points from 2022-02-05, tracked daily from 2026-09-09; earlier points are weekly, which dates a spike to within a week. Peak probability 97.3% on 2023-03-11.
Check whether a specific version is affected →
What each source publishes about which product versions carry this vulnerability, kept as written rather than merged. Absence here means no source has published applicability data, not that nothing is affected.
No mentions found in monitored research blogs or news feeds.
Coverage across public collections only: Nuclei and OpenVAS NVT (scan);
Snort and Suricata ET Open (network); Sigma and YARA (host/SIEM);
Metasploit, Exploit-DB and public GitHub repositories (exploit). Absence
here means nothing public was found, not that detection is impossible.
GitHub PoC repositories are collected automatically by
PoC-in-GitHub (CC0) and are not vetted:
some are fakes and some are malware. Treat them as evidence that code was
published, not as code to run.
OpenVAS coverage derives from the Greenbone Community Feed, made available
under the Open Database License (ODbL) v1.0;
its individual Vulnerability Tests are licensed
GNU GPL v2.
Defensive techniques inferred by MITRE D3FEND from the underlying weakness (CWE-416) — general hardening and detection guidance for this weakness class, not a vendor patch for this specific CVE.
| Source | Date | Record |
|---|---|---|
| CISA KEV | 2026-05-20 | source record → |
| CISA Vulnrichment | 2026-05-20 | source record → |
| Date | Tool | Evidence quality | Reference |
|---|---|---|---|
| — | Metasploit | Direct — curated exploit code | MS10-018 Microsoft Internet Explorer DHTML Behaviors Use After Free |
| 2010-03-10 | ExploitDB | Direct — curated exploit code | Microsoft Internet Explorer - 'iepeers.dll' Use-After-Free (Metasploit) |
| 2010-12-14 | ExploitDB | Direct — curated exploit code | Microsoft Internet Explorer - DHTML Behaviour Use-After-Free (MS10-018) (Metasploit) |
Evidence tiers are explained on the About page — a merged Metasploit module is far stronger evidence than a distro package mention.