CVE-2026-40475
📛 CVE Title
(no title)
Description
The vulnerability exists due to incorrect value length handling in X509Name field setters, where values containing NUL bytes are silently truncated, causing a divergence between the stored ASN.1 value and the value visible from Python.
Overview
- State
- —
- Assigner (CNA)
- —
- CVSS severity
- critical
- CVSS score
- 9.8 / 10
- CVSS vector
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Effective score
- 9.8 / 10 CRITICAL source: CNA overview
- CWE(s)
- —
- Reserved
- —
- Published
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- Last updated
- —
- Source
- https://www.tenable.com/cve/CVE-2026-40475
- Linked Threat
- CVE-2026-40475 — CVE-2026-40475
NVD / KEV / EPSS data refreshed 2026-05-24 23:55 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
Vendor references (0)
References embedded in the original CVE record by the assigning CNA.
None in the CVE record.
Web references (2)
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-2026-40475 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2026-40475 tenable:www.cve.org
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
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web:blog.qualys.com
Oracle released its second quarterly edition of this year's Critical Patch Update. The update received patches for 481 security vulnerabilities.
2026-05-26 02:47 UTC -
web:dbsguru.com
Oracle Critical Database Patch ID for April 2025 along with enabled Download Link An Essential/Critical Patch Update could be a collection of patches for multiple security vulnerabilities. These patches address vulnerabilities in Oracle code and third-party elements enclosed in Oracle merchandise. These patches are sometimes additive, however, every informative describes only the protection ...
2026-05-26 02:47 UTC -
web:emilms.fema.gov
Section 406 focuses on mitigation measures for facilities that have actually been damaged in a particular disaster. Section 404 has a broader scope and funds mitigation projects for both damaged and non-damaged facilities.
2026-05-26 02:47 UTC -
web:msrc.microsoft.com
The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.
2026-05-26 02:47 UTC -
web:nvd.nist.gov
An official website of the United States government Here's how you know
2026-05-26 02:47 UTC -
web:www.crowdstrike.com
Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.
2026-05-26 02:47 UTC -
web:www.csoonline.com
A sure-fire way to prevent exploitation of Log4j vulnerabilities has yet to appear, but these actions are your best bet for reducing risk.
2026-05-26 02:47 UTC -
web:www.epa.gov
For unavoidable impacts to wetlands, streams and other aquatic resources from authorized discharges of dredged or fill material, compensatory mitigation is required to replace the loss of wetland and aquatic resource functions in the watershed.
2026-05-26 02:47 UTC -
web:www.oracle.com
This Critical Patch Update contains 481 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 April 2026 Critical Patch Update: Executive Summary and Analysis.
2026-05-26 02:47 UTC -
web:www.securityweek.com
Oracle on Tuesday announced the release of 481 new security patches as part of its April 2026 Critical Patch Update (CPU). Across the 28 product families that received security updates, more than 300 patches address vulnerabilities that are remotely exploitable without authentication.
2026-05-26 02:47 UTC
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