CVE-2019-0541

Exp

A remote code execution vulnerability exists in the way that the MSHTML engine inproperly validates input, aka "MSHTML Engine Remote Code Execution Vulnerability." This affects Microsoft Office, Microsoft Office Word Viewer, Internet Explorer 9, Internet Explorer 11, Microsoft Excel Viewer, Internet Explorer 10, Office 365 ProPlus.

Published: 2019-01-08 Last update: 2025-10-29 Assigner: [email protected] Source: [email protected]

NVD Status：Analyzed，CVE State: published

View at NVD, CVE.org, EUVD

Threat Intelligence & Risk Assessment for CVE-2019-0541

KEV EPSS CVSS CWE Exploit-DB Affected

Conclusion & alert: CVE-2019-0541 is rated Critical Active Threat (98.8/100): CVSS High severity, with high exploitation likelihood (EPSS 87.17%, 99th percentile). Core evidence: CISA KEV confirms active exploitation (added 2021-11-03) affecting Microsoft / MSHTML. a weakness (CWE-77) Unauthenticated remote administrative access may be possible. EPSS rose +3.77% over the last day, indicating growing attacker interest. Mandatory action: The CISA remediation deadline has passed—treat as an emergency patch priority.

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

CISA KEV Record for CVE-2019-0541

Name: Microsoft MSHTML Remote Code Execution Vulnerability · CISA KEV detail

Exploit added: 2021-11-03

Action due: 2022-05-03

Required action: Apply updates per vendor instructions.

Public exploit references (Exploit-DB) for CVE-2019-0541

EDB-ID	Source	Kind	Published	Link
46536	exploit_db	edb	2019-03-13	Exploit-DB ↗
—	nvd_ref	exploit_tag		Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-0541

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	2026-05-29	83.39%	87.17%	+3.77%
2	2026-03-20	80.94%	83.39%	+2.46%
3	2025-12-09	—	80.94%	—

Full EPSS history (29 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-0541

CVSS metrics for this CVE.

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
8.8	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/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:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. 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.	2.8	5.9	[email protected]
8.8	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/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:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. 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.	2.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0
9.3	2.0	HIGH	`AV:N/AC:M/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:M) Exploitation needs some favorable conditions, but not exceptional ones. 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.	8.6	10.0	[email protected]

Weakness enumeration for CVE-2019-0541

CWE-77 MITRE ↗

Affected software / configurations for CVE-2019-0541

Vendor	Product	Version	Raw CPE
microsoft	internet_explorer	11	cpe:2.3:a:microsoft:internet_explorer:11:::::::*
microsoft	excel_viewer	2007	cpe:2.3:a:microsoft:excel_viewer:2007:sp3::::::
microsoft	office	2010	cpe:2.3:a:microsoft:office:2010:sp2::::::
microsoft	office	2013	cpe:2.3:a:microsoft:office:2013:sp1::::::
microsoft	office	2013	cpe:2.3:a:microsoft:office:2013:sp1:::rt:::*
microsoft	office	2016	cpe:2.3:a:microsoft:office:2016:::::::*
microsoft	office	2019	cpe:2.3:a:microsoft:office:2019:::::::*
microsoft	office_365_proplus	—	cpe:2.3:a:microsoft:office_365_proplus:-:::::::*
microsoft	office_word_viewer	—	cpe:2.3:a:microsoft:office_word_viewer:-:::::::*
microsoft	internet_explorer	9	cpe:2.3:a:microsoft:internet_explorer:9:::::::*
microsoft	internet_explorer	10	cpe:2.3:a:microsoft:internet_explorer:10:::::::*

References for CVE-2019-0541

URL	Tags
http://www.securityfocus.com/bid/106402	Broken Link Third Party Advisory VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0541	Patch Vendor Advisory
https://www.exploit-db.com/exploits/46536/	Exploit Third Party Advisory VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0541	US Government Resource

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