Threats / Microsoft / CVE-2010-3962
CVE-2010-3962
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
Microsoft Internet Explorer vulnerability
Microsoft Internet Explorer contains an uninitialized memory corruption vulnerability enabling remote code execution. The vulnerability is actively exploited in the wild.
Verdict
Today item — known-exploited.
This vulnerability poses significant risk due to active exploitation and high exploitability. Internet Explorer users face immediate threat of code execution through specially crafted content. Affected versions are end-of-life and no longer receive security updates.
CISA KEV Yes · 2025-10-064EPSS 0.96047 (verify live)5CVSS 8.1 (CISA)3CISA SSVC Exploitation: active · Automatable: yes · Impact: total3Exploit Weaponized · public exploit · Metasploit module12
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
7 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-10-06).
Probability (EPSS)
EPSS 0.96047 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 8.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) · Affected: Microsoft, Internet Explorer. Confirm exact fixed builds in the vendor advisory.CVSS — CISA-assigned via the ADP container (CVE.org), version 3.1; the CNA left no metrics, so CISA's own score is used ahead of NVD.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: yes · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 5449 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a functional/weaponized public exploit). Catalog entries: Metasploit module. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
Craft malicious web content or host it on a compromised website to trigger memory corruption when a user visits.
Business
End users lose system control and data confidentiality; organizations face potential data breach and operational disruption from compromised endpoints.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
Execute arbitrary code with the privileges of the affected Internet Explorer process to establish persistence or lateral movement.
Business
Attackers gain foothold for further network compromise, credential theft, and malware deployment across enterprise infrastructure.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05