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  4. CVE 2018 25221 echat server 31 buffer overflow via chatghp
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Back to active CVEs
Critical · CVSS 9.3CVE-2018-25221

EChat Server 3.1 Buffer Overflow via chat.ghp username Parameter

Answer in brief

CVE-2018-25221 records a Critical severity (CVSS 9.3) vulnerability in EChat Server 3.1 Buffer Overflow via chat.ghp username Parameter. The current sources do not mark it as known exploited. The current feed maps Echatserver/EChat Server (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 Mar 28, 2026Updated Oct 1, 2026Source checked Oct 2, 2026First seen by HOL Oct 1, 2026Material review Oct 1, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.3
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 9.3. 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 Echatserver/EChat Server (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Echatserver/EChat Servergeneric3.1Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Echatserver/EChat Server.
  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

    Mar 28, 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 referenceexploit-db.com
  • Source referencevulncheck.com
Upstream source description

EChat Server 3.1 contains a buffer overflow vulnerability in the chat.ghp endpoint that allows remote attackers to execute arbitrary code by supplying an oversized username parameter. Attackers can send a GET request to chat.ghp with a malicious username value containing shellcode and ROP gadgets to achieve code execution in the application context.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • CodeArt Google MP3 Audio Player 1.0.11 Arbitrary File Read via direct_download.phpSame generic ecosystem
  • Weaver e-Bridge Unauthenticated Arbitrary File Read via saveYZJFileSame generic ecosystem
  • H3C CVM Unauthenticated File Upload via fileUpload/upload TokenSame generic ecosystem
  • Missing Authorization in Meari IoT Cloud Platform OpenAPI ServiceSame generic ecosystem
  • LimeSurvey Community Edition 7.4.0 - Stored XSS through the Date/Time date_min question attributeSame generic ecosystem
  • Apache Traffic Server: SNI to Host header matching policy is not properly enforcedSame generic ecosystem

Record context

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