Answer in brief
CVE-2025-14847 records a High severity vulnerability in Zlib compressed protocol header length confusion may allow memory read. The current sources mark it as known exploited. The current feed maps MongoDB Inc./MongoDB 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.
Answer in brief
CVE-2025-14847 records a High severity vulnerability in Zlib compressed protocol header length confusion may allow memory read. The current sources mark it as known exploited. The current feed maps MongoDB Inc./MongoDB 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.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. 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.
The current feed maps MongoDB Inc./MongoDB Server (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| MongoDB Inc./MongoDB Servergeneric | >=8.2 <8.2.3 || >=8.0 <8.0.17 || >=7.0 <7.0.28 || >=6.0 <6.0.27 || >=5.0 <5.0.32 || >=4.4 <4.4.30 || 4.2 || 4.0 || 3.6 | 8.2.3, 8.0.17, 7.0.28, 6.0.27, 5.0.32, 4.4.30 |
Published upstream
Dec 19, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Feb 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Dec 29, 2025
Evidence: source:kev:kev:kev:recordMismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. 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.
The current feed maps MongoDB Inc./MongoDB Server (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| MongoDB Inc./MongoDB Servergeneric | >=8.2 <8.2.3 || >=8.0 <8.0.17 || >=7.0 <7.0.28 || >=6.0 <6.0.27 || >=5.0 <5.0.32 || >=4.4 <4.4.30 || 4.2 || 4.0 || 3.6 | 8.2.3, 8.0.17, 7.0.28, 6.0.27, 5.0.32, 4.4.30 |
Published upstream
Dec 19, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Feb 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Dec 29, 2025
Evidence: source:kev:kev:kev:recordMismatched length fields in Zlib compressed protocol headers may allow a read of uninitialized heap memory by an unauthenticated client. This issue affects all MongoDB Server v7.0 prior to 7.0.28 versions, MongoDB Server v8.0 versions prior to 8.0.17, MongoDB Server v8.2 versions prior to 8.2.3, MongoDB Server v6.0 versions prior to 6.0.27, MongoDB Server v5.0 versions prior to 5.0.32, MongoDB Server v4.4 versions prior to 4.4.30, MongoDB Server v4.2 versions greater than or equal to 4.2.0, MongoDB Server v4.0 versions greater than or equal to 4.0.0, and MongoDB Server v3.6 versions greater than or equal to 3.6.0.
Quoted source text, attributed separately from HOL analysis.