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CVE-2019-1308

29
FAUCET Score

CVE-2019-1308 describes a remote code execution vulnerability within the Chakra scripting engine, specifically how it handles objects in memory, affecting Microsoft Edge, Windows 10, Windows Server 2016, and Windows Server 2019. This vulnerability carries a CVSS score of 7.5 (High), indicating a network-based attack with high complexity, requiring user interaction, but potentially leading to high impact on confidentiality, integrity, and availability. While it has garnered some community discussion and media coverage, there is currently no evidence of active exploitation, nor are there publicly available exploit modules like Metasploit or Nuclei.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.11.14CPE matchmatch criteria
cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
9.70%
Probability of exploitation in next 30 days
EPSS Percentile
95.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0970 is in the 72nd percentile among its peer group of 1,572 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.4 Bluesky, 0.2 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.6 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (43)

microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows Server 2016
View patch
microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 10724-10951
View patch
microsoftpatch availablevia msrc
Product: 10724-10952
View patch
microsoftpatch availablevia msrc
Product: 10724-11497
View patch
microsoftpatch availablevia msrc
Product: 10724-11498
View patch
microsoftpatch availablevia msrc
Product: 10724-11563
View patch
microsoftpatch availablevia msrc
Product: 10724-11568
View patch
microsoftpatch availablevia msrc
Product: 10724-11569
View patch
microsoftpatch availablevia msrc
Product: 10724-11570
View patch
microsoftpatch availablevia msrc
Product: 10724-11571
View patch
microsoftpatch availablevia msrc
Product: 10724-11453
View patch
microsoftpatch availablevia msrc
Product: 10724-11454
View patch
microsoftpatch availablevia msrc
Product: 10724-11583
View patch
microsoftpatch availablevia msrc
Product: 10724-11644
View patch
microsoftpatch availablevia msrc
Product: 10724-11645
View patch
microsoftpatch availablevia msrc
Product: 10724-11646
View patch
microsoftpatch availablevia msrc
Product: 10724-10729
View patch
microsoftpatch availablevia msrc
Product: 10724-10735
View patch
microsoftpatch availablevia msrc
Product: 10724-10852
View patch
microsoftpatch availablevia msrc
Product: 10724-10853
View patch
microsoftpatch availablevia msrc
Product: 10724-10816
View patch
microsoftpatch availablevia msrc
Product: ChakraCore
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows Server 2019
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for ARM64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems
View patch
nugetpatch availablevia ghsa
Product: Microsoft.ChakraCoreFixed in: 1.11.14

Vendor Advisories (2)

nugetGHSA-vw2g-5827-m9fphigh

Out-of-bounds write

Mar 29, 2021
microsoft2019-Oct/CVE-2019-1308Critical

Chakra Scripting Engine Memory Corruption Vulnerability

Oct 8, 2019

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2019-1308
PatchVendor Advisory