CVE-2018-8133

Exp

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-0943, CVE-2018-8130, CVE-2018-8145, CVE-2018-8177.

Published: 2018-05-09 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-8133 is rated High Exploit Risk (80.5/100): CVSS High severity, with high exploitation likelihood (EPSS 62.26%, 98th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.11% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-8133

EDB-ID Source Kind Published Link
44817 exploit_db edb 2018-05-31 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-8133

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-29 61.15% 62.26% +1.11%
2 2026-01-05 68.90% 61.15% -7.74%
3 2025-11-23 — 68.90% —

Full EPSS history (30 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-8133

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.6 5.9 [email protected]
7.6 2.0 HIGH
AV:N/AC:H/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 4.9 10.0 [email protected]

Weakness enumeration for CVE-2018-8133

GitHub Security Advisory for CVE-2018-8133

Affected software / configurations for CVE-2018-8133

Vendor Product Version Raw CPE
microsoft edge — cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*
microsoft chakracore <= 1.8.3 cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*

References for CVE-2018-8133

URL Tags
http://www.securityfocus.com/bid/103982 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040844 Third Party Advisory VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8133 Patch Vendor Advisory
https://www.exploit-db.com/exploits/44817/ Exploit Third Party Advisory VDB Entry
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