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  4. CVE 2021 47765 absolutetelnet 1124 username denial of service poc
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Back to active CVEs
Medium · CVSS 6.7CVE-2021-47765

AbsoluteTelnet 11.24 - 'Username' Denial of Service (PoC)

Answer in brief

CVE-2021-47765 records a Medium severity (CVSS 6.7) vulnerability in AbsoluteTelnet 11.24 - 'Username' Denial of Service (PoC). The current sources do not mark it as known exploited. The current feed maps Celestialsoftware/AbsoluteTelnet (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jan 15, 2026Updated Oct 1, 2026Source checked Oct 1, 2026First seen by HOL Oct 1, 2026Material review Oct 1, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Celestialsoftware/AbsoluteTelnet (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Celestialsoftware/AbsoluteTelnetgeneric11.24Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Celestialsoftware/AbsoluteTelnet.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Jan 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 1, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 1, 2026

Sources and claim methodology

  • Source referencecelestialsoftware.net
  • Source referenceexploit-db.com
Upstream source description

AbsoluteTelnet 11.24 contains a denial of service vulnerability that allows local attackers to crash the application by manipulating username and error report fields. Attackers can trigger the crash by inserting 1000 characters into the username or email address fields, causing the application to become unresponsive.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Zod 4.6.5 Uncontrolled Resource Consumption via Array ValidationSame generic ecosystem
  • Wormhole.app SSRFSame generic ecosystem
  • Authenticated OS Command Injection in TL-WR841N IPv6 WAN ConfigurationSame generic ecosystem
  • Unauthenticated Remote Code Execution via MacTool Command Injection in TP-Link Tapo C120 & C200Same generic ecosystem
  • Cadmos LTI exposure of sensitive information via debug modeSame generic ecosystem
  • Joyland AI hard-coded credentials for push notificationsSame generic ecosystem

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787
Source
CVE List V5
Source checked
Oct 1, 2026
References
2 linked sources
Open source record