CVE-2021-47969
📛 CVE Title
(no title)
Description
Color Notes 1.4 contains a denial of service vulnerability that allows attackers to crash the application by pasting excessively long character strings into note fields. Attackers can generate a payload containing 350,000 repeated characters and paste it twice into a new note to cause the application to stop responding.
Overview
- State
- —
- Assigner (CNA)
- —
- CVSS severity
- high
- CVSS score
- 7.5 / 10
- CVSS vector
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Effective score
- 7.5 / 10 HIGH source: CNA overview
- CWE(s)
- —
- Reserved
- —
- Published
- —
- Last updated
- —
- Source
- https://www.tenable.com/cve/CVE-2021-47969
- Linked Threat
- CVE-2021-47969 — CVE-2021-47969
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
- 2026-05-16 16:16:22 UTC
- NVD last modified
- 2026-05-18 17:32:04 UTC
- NVD CVSS v3.1
- 7.5 / 10 HIGH source: disclosure@vulncheck.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 3.6 / 10
- EPSS score
- 0.0005 (probability of exploitation in next 30 days)
- EPSS percentile
- 16.41% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24
NVD-assigned CWE(s):
CWE-789
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-05-25 00:03 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-2021-34826 - Assigner
- VulnCheck
- Published
- May 16, 2026, 3:26:10 PM
- Updated
- May 18, 2026, 7:55:22 PM
- EUVD base score (CVSS 4.0)
-
8.7 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - EUVD-reported EPSS
- 0.0500
- Vendors
- color-notes
- Products
-
Color Notes (1.4)
- Aliases
-
GHSA-f83w-w68r-f82v
ENISA description: Color Notes 1.4 contains a denial of service vulnerability that allows attackers to crash the application by pasting excessively long character strings into note fields. Attackers can generate a payload containing 350,000 repeated characters and paste it twice into a new note to cause the application to stop responding.
Vendor references (0)
References embedded in the original CVE record by the assigning CNA.
None in the CVE record.
Web references (5)
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-2021-47969 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2021-47969 tenable:www.cve.org
- https://www.exploit-db.com/exploits/49952 tenable:www.exploit-db.com
- https://www.first.org/epss/ tenable:www.first.org
- https://www.vulncheck.com/advisories/color-notes-denial-of-service-via-long-character-string tenable:www.vulncheck.com
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://www.exploit-db.com/exploits/49952 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/color-notes-denial-of-service-via-long-character-string disclosure@vulncheck.com
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:access.redhat.com
Learn about our open source products, services, and company. You are here
2026-05-26 02:54 UTC -
web:cybersecuritynews.com
Microsoft has officially released the April 2026 Patch Tuesday cumulative update, KB5083769, for Windows 11 versions 25H2 and 24H2.
2026-05-26 02:54 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 02:54 UTC -
web:thewincentral.com
Microsoft rolls out Windows 11 KB5083769 (April 2026 update). New features & fixes. How to download. - Read in Latest News on WinCentral
2026-05-26 02:54 UTC -
web:www.neowin.net
Microsoft earlier confirmed that its latest Windows 11 updates under KB5083769 and KB5083631 have new entries in its blocklist. A Registry fix can unpatch it.
2026-05-26 02:54 UTC -
web:www.nexusmods.com
This mod aims to fix ( or drastically minimize) vertex explosions on shadps4 by removing certain files related to face customization that the emulator is not currently handling correctly
2026-05-26 02:54 UTC -
web:www.notebookcheck.net
Windows 11 KB5083769 is blocking the psmounterex.sys driver used by Macrium Reflect and Acronis, causing backup failures and VSS timeouts on 24H2 and 25H2.
2026-05-26 02:54 UTC -
web:www.oracle.com
Critical Security Patch Updates Critical Security Patch Updates provide security patches for supported Oracle on-premises products. A Critical Security Patch Update provides targeted, high-priority security fixes in a smaller, more focused format, making them easier to apply with minimal disruption.
2026-05-26 02:54 UTC -
web:www.prajwaldesai.com
Microsoft's KB5083769 update for Windows 11 fixes "Reset this PC" errors, boosts SMB compression reliability over QUIC, and enhances phishing defenses for .rdp files.
2026-05-26 02:54 UTC -
web:www.windowslatest.com
Mayank Parmar - April 19, 2026 Windows 11 KB5083769 is not a big update, but on a few PCs, it could trigger a BitLocker recovery screen alert, and Microsoft says it's already rolling out a fix .
2026-05-26 02:54 UTC
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