Threats / Microsoft / CVE-2010-0249
CVE-2010-0249
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Internet Explorer vulnerability
Microsoft Internet Explorer contains a use-after-free vulnerability allowing remote code execution through pointer manipulation of deleted objects.
Verdict
Today item — known-exploited.
This vulnerability enables arbitrary code execution on affected systems. Active exploitation in the wild combined with high EPSS score indicates significant risk. End-of-life status means no patches are available; mitigation requires discontinuing product use or implementing network controls.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
6 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 2026-05-20).
Probability (EPSS)
EPSS 0.91885 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Microsoft, Internet Explorer. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-416 Use After Free — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
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
I craft a malicious webpage that triggers object deletion and then accesses the freed memory pointer in Internet Explorer.
Business
Users visiting attacker-controlled or compromised websites face immediate code execution risk without warning or user interaction beyond browsing.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I execute arbitrary code with the privileges of the browsing user, establishing persistence or lateral movement within the network.
Business
Compromised endpoints become entry points for data theft, malware deployment, and further network compromise across the organization.
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