CVE-1999-0901
📛 CVE Title
ypserv allows a local user to modify the GECOS and login shells of other users.
Description
No English description in the CVE record.
Description (MITRE) cveawg.mitre.org
Pulled from cveawg.mitre.org/api/cve/CVE-1999-0901 on 2026-06-30. Shown when MITRE's text differs from the cvelistV5 mirror.
ypserv allows a local user to modify the GECOS and login shells of other users.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- microsoft
- CVSS severity
- —
- CVSS score
- —
- CVSS vector
- —
- Effective score
- no score available from CNA, NVD, or AI yet
- CWE(s)
- —
- Reserved
- —
- Published
- 2025-10-01 23:10 UTC
- Last updated
- 2025-10-01 23:10 UTC
- Source
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-1999-0901
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
- 1999-10-23 04:00:00 UTC
- NVD last modified
- 2026-06-16 21:49:17 UTC
- EPSS score
- 0.0041 (probability of exploitation in next 30 days)
- EPSS percentile
- 33.00% vs all CVEs — higher = more likely to be exploited, as of 2026-06-29
NVD / KEV / EPSS data refreshed 2026-06-30 06:43 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
AI-forensic CVSS estimate
Used only when a CVE has no official CVSS from its CNA or NVD. An LLM estimates the v3.1 base score from the description; a HIGH/CRITICAL estimate promotes the CVE to a Threat.
No AI estimate yet — it runs automatically once NVD has been checked, or click the button above.
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-1999-0882 - Assigner
- mitre
- Published
- Jan 4, 2000, 5:00:00 AM
- Updated
- Aug 1, 2024, 4:55:29 PM
- EUVD-reported EPSS
- 0.4100
- Vendors
- n/a
- Products
-
n/a (n/a)
- Aliases
-
GHSA-f3vg-8384-p37m
ENISA description: ypserv allows a local user to modify the GECOS and login shells of other users.
EUVD references (1)
Microsoft Security Response Center MSRC
Microsoft's vendor-authoritative record from the Security Update Guide — its own CVSS score, impact, severity rating, exploit assessment, and KB-article fixes. Refreshed 2026-10-23 00:54 UTC (source: CVRF).
- MS severity
- Important
- Release
- 2000-Jan
Microsoft remediations / KB articles (2)
- CBL-Mariner Releases — Vendor Fix / Security Update (fixed build 4.1-4)
- https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade — None Available / CBL-Mariner Releases
Microsoft FAQ (1)
Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Affected products — CPE 2.3 (1) NVD
NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.
cpe:2.3:a:linux-nis:ypserv:*:*:*:*:*:*:*:*
Vendor references (0)
References embedded in the original CVE record by the assigning CNA.
None in the CVE record.
MITRE references (1) cveawg.mitre.org
Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.
- https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0901 x_refsource_MISC
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.
NVD-tagged references (2)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0901 cve@mitre.org
- https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0901 af854a3a-2127-422b-91ae-364da2661108
Remediations (10)
-
web:cyberpress.org
The Cybersecurity and Infrastructure Security Agency (CISA) has added a critical Microsoft SharePoint Server vulnerability to its Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild and setting an aggressive remediation deadline for federal agencies and organizations running the platform.
2026-07-04 21:28 UTC -
web:cybersecuritynews.com
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued Binding Operational Directive (BOD) 26-04, titled "Prioritizing Security Updates Based on Risk," compelling all Federal Civilian Executive Branch (FCEB) agencies to remediate the most dangerous known exploited vulnerabilities within just three calendar days.
2026-07-04 21:28 UTC -
web:cybersecuritynews.com
Microsoft has released its June 2026 Patch Tuesday security updates, addressing a hefty 198 vulnerabilities across its product ecosystem. The June rollout, published on June 9, 2026, stands out not only for its volume but also for the inclusion of three zero-day vulnerabilities that were actively exploited or publicly known before a fix was available. Administrators are urged to prioritize ...
2026-07-04 21:28 UTC -
web:github.com
Patch for Windows 9x to fix CPU issues. Contribute to JHRobotics/patcher9x development by creating an account on GitHub.
2026-07-04 21:28 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.
2026-07-04 21:28 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.
2026-07-04 21:28 UTC -
web:redmondmag.com
Microsoft's June Patch Tuesday release is one of the largest in company history, but the bigger concern for enterprise IT teams is the handful of zero-days already known to attackers and researchers.
2026-07-04 21:28 UTC -
web:www.cisa.gov
The Directive consolidates, clarifies and updates the urgency of vulnerability remediation , focuses agencies patching efforts on the highest risk, and enhances efficiency for federal civilian agencies.
2026-07-04 21:28 UTC -
web:www.cisa.gov
The median time for full resolution rose to 43 days. Defenders need greater clarity and speed to patch systems in today's threat landscape. We must flip the script on patching prioritization: patch smarter, not harder.
2026-07-04 21:28 UTC -
web:www.ninjaone.com
KB5095091 is a Windows security and quality update released as part of Microsoft's regular patch cycle. This update addresses multiple security vulnerabilities and system stability improvements across supported Windows versions.
2026-07-04 21:28 UTC
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