CVE-2020-1380
ENISA EUVD: EUVD-2020-12256 ↗
Exploited in the Wild
✓ Confirmed 0-Day
★ Google Project Zero
Triaged: March 5, 2026
4 articles
EPSS Score
Source: FIRST.org · 2026-05-24
91.73%
probability
This CVE has a 91.73% probability
of being exploited in the next 30 days.
0%
Top 99.7th percentile of all CVEs
100%
CVSS v3.1
Source: NVD7.8
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Temporal
Exploit Code Maturity
Proof-of-Concept
Remediation Level
Official Fix
Report Confidence
Confirmed
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Description
Project ZeroUse-after-free in JScript9
Affected Products
Attack Intelligence
Google Project Zero
Patched
Aug. 11, 2020
Reported by
Boris Larin (Oct0xor) of Kaspersky Lab
Root Cause Analysis
https://googleprojectzero.github.io/0days-in-the-wild//0day-RCAs/2020/CVE-2020-1380.html
Microsoft August 2020 Patch Tuesday fixes 2 zero-days, 120 flaws
BleepingComputer
Aug 11, 2020
Google Warns of Internet Explorer Zero-Day Vulnerability Exploited by ScarCruft Hackers
TheHackerNews
Windows, IE11 zero-day vulnerabilities chained in targeted attack
BleepingComputer
Aug 12, 2020
Signal Intelligence
Confidence
95%
EPSS
91.73%
CVSS v3.1
7.8
Mentions
4
Last Seen
Aug 12, 2020
CNA Information
Analyst Note
Auto-imported from Google Project Zero — confirmed zero-day by definition.
Threat Actors 3
Lazarus Group
apt_group
Information theft and espionage
🇰🇵 KP
DarkHotel
apt_group
Information theft and espionage
🇰🇷 KR
APT37
apt_group
Information theft and espionage
🇰🇵 KP
Triage Info
Decided atMar 05, 2026