CVE-2013-3893Active Exploitation(microsoft / internet_explorer)

MEDIUMCVSS 8.8 · HIGHCISA KEV

Exploitation ongoing with high activity in latest observed window (5 mentions)

Immediate actions

Patch microsoft internet_explorer systems immediately
Assume compromise if assets are exposed
Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft

Recommended action window: Immediate (within 24h)

NVD description

Use-after-free vulnerability in the SetMouseCapture implementation in mshtml.dll in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code via crafted JavaScript strings, as demonstrated by use of an ms-help: URL that triggers loading of hxds.dll.

microsoft CVEs Back to dashboard

5.5/ 10 priority

Sources & remediation

Listed in the CISA Known Exploited Vulnerabilities catalog. Federal remediation due date: 2025-09-02. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Exploit / PoC references

Vendor / third-party advisories

Other references

Weakness type (CWE)

CWE-416

Priority

MEDIUM

Exploitation

ACTIVE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

internet_explorer

Threat summary

Active exploitation appears in 3 classified signals
Public PoC is present in monitored signal
Patch or workaround signal is available
5 mentions across 1 observed day

What's happening

Active exploitation reported across 3 signals
PoC mentioned or linked in 1 signal
Patch or workaround mentioned in 1 signal
Technical details provided in 4 signals
Disclosure: 1 classified signal
General: 1 classified signal
5 total mentions across 1 day

Affected systems

Vendors

microsoft

Products

internet_explorer

6 versions affected across 1 product

Deep dive

Activity timeline5 mentions / 1d

Signal classification3 categories

Active Exploitation

360.0%

Disclosure

120.0%

General

120.0%

Referenced assets1 URL

By indicator

https://research.lyrie.ai/research/active-exploit-cve-2013-3893-internet-explorer

Full discourse5 posts

Lyrie.ai@lyrie_ai160d
Disclosure
Technical detail CVE-2013-3893 is categorized as a resource management error (CWE-399) resulting in memory corruption inside the Internet Explorer rendering pipeline CISA KEV. The vulnerability allows remote attackers to execute arbitrary code by enticing a user to load…
Post summary
A technical disclosure of CVE‑2013‑3893, a resource-management bug causing memory corruption in Internet Explorer that permits remote code execution; the text supplies detailed vulnerability attributes but no PoC, exploit code, patch or active exploitation evidence.
1000041
152 followersView on X
Lyrie.ai@lyrie_ai160d
Active Exploitation
Why it matters The vulnerability permits code execution via maliciously crafted content rendered by Internet Explorer, turning simple web delivery into full device compromise paths NVD CVE-2013-3893. KEV inclusion means exploitation is not theoretical; CISA only lists…
Post summary
CVE‑2013‑3893 enables code execution in Internet Explorer through crafted content; KEV inclusion suggests active exploitation, but no PoC or patch information is provided.
1000032
152 followersView on X
Lyrie.ai@lyrie_ai160d
General
Exposure is often user-driven: loading a hostile page or content that invokes the IE engine can be enough to trigger the bug and execute attacker-supplied code NVD CVE-2013-3893. CISA lists ransomware usage as unknown for this CVE, but its KEV status and RCE semantics fit…
Post summary
The passage outlines a user‑driven IE vulnerability (CVE‑2013‑3893) that permits remote code execution, but it offers no PoC, exploit tool, patch, or confirmation of active exploitation.
1000025
152 followersView on X
Lyrie.ai@lyrie_ai160d
Active Exploitation
CVE-2013-3893: CISA added IE RCE CVE-2013-3893 to KEV; legacy/EoL risk. Apply mitigations or discontinue use by due date per KEV guidance. What happened CISA added CVE-2013-3893 to the Known Exploited Vulnerabilities (KEV) catalog on 2025-08-12 with a remediation due date…
Post summary
CISA listed CVE-2013-3893 in its KEV catalog, confirming active exploitation and calling for mitigations by a set due date.
1000036
152 followersView on X
Lyrie.ai@lyrie_ai160d
Active Exploitation
https://research.lyrie.ai/research/active-exploit-cve-2013-3893-internet-explorer #lyrie #cybersecurity #CVE #threatintel #zerodayattack
Post summary
A research link suggests that CVE‑2013‑3893 is being actively exploited in Internet Explorer, though specific exploit code or mitigation details are not provided.
0000035
152 followersView on X

CPE platform detail7 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

7 of 7 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	microsoft	internet_explorer	10	-	-
App	microsoft	internet_explorer	11	-	-
App	microsoft	internet_explorer	11	-	-
App	microsoft	internet_explorer	6	-	-
App	microsoft	internet_explorer	7	-	-
App	microsoft	internet_explorer	8	-	-
App	microsoft	internet_explorer	9	-	-

Explore more

Back to dashboard microsoft CVEs internet_explorer vulnerabilities

What researchers are saying

CVE-2013-3893

Lyrie.ai[verified]@lyrie_aiDisclosure

A technical disclosure of CVE‑2013‑3893, a resource-management bug causing memory corruption in Internet Explorer that permits remote code execution; the text supplies detailed vulnerability attributes but no PoC, exploit code, patch or active exploitation evidence.

Lyrie.ai[verified]@lyrie_aiActive Exploitation

CVE‑2013‑3893 enables code execution in Internet Explorer through crafted content; KEV inclusion suggests active exploitation, but no PoC or patch information is provided.

Lyrie.ai[verified]@lyrie_aiGeneral

The passage outlines a user‑driven IE vulnerability (CVE‑2013‑3893) that permits remote code execution, but it offers no PoC, exploit tool, patch, or confirmation of active exploitation.

Lyrie.ai[verified]@lyrie_aiActive Exploitation

CISA listed CVE-2013-3893 in its KEV catalog, confirming active exploitation and calling for mitigations by a set due date.

Lyrie.ai[verified]@lyrie_aiActive Exploitation

A research link suggests that CVE‑2013‑3893 is being actively exploited in Internet Explorer, though specific exploit code or mitigation details are not provided.