CVE-2025-35991
📛 CVE Title
CVE-2025-35991
Description
Improper initialization in the UEFI firmware for some Intel platforms within Ring 0: Bare Metal OS may allow an information disclosure. System software adversary with a privileged user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- intel
- CVSS severity
- MEDIUM
- CVSS score
- 5.6 / 10
- CVSS vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N- Effective score
- 5.6 / 10 MEDIUM source: CNA overview
- CWE(s)
-
CWE-665 - Reserved
- 2025-04-15
- Published
- 2026-05-12 18:35 UTC
- Last updated
- 2026-05-12 19:06 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2025/35xxx/CVE-2025-35991.json
- Linked Threat
- CVE-2025-35991 — CVE-2025-35991
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-05-12 17:16:13 UTC
- NVD last modified
- 2026-06-17 09:14:20 UTC
- EPSS score
- 0.0009 (probability of exploitation in next 30 days)
- EPSS percentile
- 0.73% vs all CVEs — higher = more likely to be exploited, as of 2026-08-10
NVD / KEV / EPSS data refreshed 2026-08-11 06:51 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2025-209793 - Assigner
- intel
- Published
- May 12, 2026, 4:35:14 PM
- Updated
- May 12, 2026, 5:06:21 PM
- EUVD base score (CVSS 4.0)
-
5.6 / 10
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - EUVD-reported EPSS
- 0.0200
- Vendors
- n/a
- Products
-
Intel platforms (See references)
ENISA description: Improper initialization in the UEFI firmware for some Intel platforms within Ring 0: Bare Metal OS may allow an information disclosure. System software adversary with a privileged user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
EUVD references (1)
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| n/a | Intel platforms |
See references (affected)
|
— |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
MITRE references (1) cveawg.mitre.org
Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.
Web references (3)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://nvd.nist.gov/vuln/detail/CVE-2025-35991 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2025-35991 tenable:www.cve.org
- https://www.first.org/epss/ tenable:www.first.org
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
Remediations (18)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:cyberpress.org
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two actively exploited Microsoft Defender vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, issuing an urgent remediation directive for federal agencies with a due date of June 3, 2026.
2026-05-23 20:57 UTC -
web:krebsonsecurity.com
Microsoft expects that exploitation is more likely. May's Patch Tuesday is a welcome respite from April, which saw Microsoft fix a near-record 167 security flaws.
2026-05-23 20:57 UTC -
web:nvd.nist.gov
An official website of the United States government Here's how you know
2026-05-23 20:57 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-05-23 20:57 UTC -
web:www.bleepingcomputer.com
Microsoft has released out-of-band (OOB) security updates to patch a critical-severity Windows Server Update Service (WSUS) vulnerability with publicly available proof-of-concept exploit code.
2026-05-23 20:57 UTC -
web:www.cisecurity.org
<p>Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or ...
2026-05-23 20:57 UTC -
web:www.computerworld.com
Each month, the team at Readiness analyzes the latest Patch Tuesday updates from Microsoft and provides detailed, actionable testing guidance. The company's Patch Tuesday release for February ...
2026-05-23 20:57 UTC -
web:www.csoonline.com
New PoC shows how Microsoft Defender can be tricked into rewriting malicious files into protected locations, enabling SYSTEM-level privilege escalation on fully patched Windows systems.
2026-05-23 20:57 UTC -
web:www.thehackerwire.com
CVE-2025-35991 is a Info severity security vulnerability. Improper initialization in the UEFI firmware for some Intel platforms within Ring 0: Bare Metal OS may allow an information disclosure.
2026-05-23 20:57 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-05-23 20:57 UTC -
web:blog.qualys.com
As cybersecurity threats evolve, Microsoft's October 2025 Patch Tuesday delivers one of the most comprehensive security updates of the year. Here's a quick breakdown of what you need to know.
2026-05-26 02:53 UTC -
web:community.ui.com
Published: May 21, 2026 Updated: May 22, 2026 Version: 1.1 Revision: 1.1 Summary 1 of 5 A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection. Affected Products: UniFi OS Server (Version 5.0.6 and earlier) Mitigation : Update your UniFi OS Server to Version 5.0.8 or later ...
2026-05-26 02:53 UTC -
web:krebsonsecurity.com
October's Patch Tuesday also marks the final month that Microsoft will ship security updates for Windows 10 systems.
2026-05-26 02:53 UTC -
web:learn.microsoft.com
Windows 11, version 25H2 is now available for all eligible devices. Devices running Home and Pro editions of Windows 11 that are not managed by IT departments will receive the update to Windows 11, version 25H2 through the machine learning-based intelligent rollout.
2026-05-26 02:53 UTC -
web:www.cisa.gov
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild. Organizations should use the KEV catalog as an input to their vulnerability management prioritization framework.
2026-05-26 02:53 UTC -
web:www.cve.org
At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures
2026-05-26 02:53 UTC -
web:www.oracle.com
This Critical Patch Update contains 374 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at October 2025 Critical Patch Update: Executive Summary and Analysis.
2026-05-26 02:53 UTC -
web:www.rapid7.com
Microsoft has published 172 new vulnerabilities, including six zero-day vulnerabilities. Windows 10 moves past the end of support, sort of. Critical RCE in Windows Server Update Service.
2026-05-26 02:53 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2025-35991.json.
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