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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2015-2419

Microsoft Internet Explorer Memory Corruption Vulnerability

KEVEXPLOITHIGH 8.8EPSS 53.0%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 18 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

JScript 9 in Microsoft Internet Explorer 10 and 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "JScript9 Memory Corruption Vulnerability."

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
52.98% probability · 99th percentile
Public exploits
1 in Exploit-DB · first 1 February 2016
CISA KEV
Listed 28 March 2022 · due 18 April 2022
Weakness
CWE-787
Affected
microsoft/internet explorer
Source
secure@microsoft.com
EPSS trend
0%28%55%30 October 2026: 52.98%30 October 202630 October 2026

EPSS 53.0% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2015-2419

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-44743source ↗Microsoft Internet Explorer 11 - javascript Code Executionwindows · checkpointlocal1 February 2016no

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.