# CVE-2025-0755: MongoDB C Driver bson library may be susceptible to buffer overflow

> CVE-2025-0755: MongoDB C Driver bson library may be susceptible to buffer overflow. CVSS 8.4 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-0755
Last updated: 2026-06-17T08:27:06Z

- Published: 2025-03-18 09:01 UTC · Updated: 2026-06-17 08:27 UTC · Assigner: mongodb
- CVSS: 8.4 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 0.79%, 56th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-122

## Description

The various bson\_append functions in the MongoDB C driver library may be susceptible to buffer overflow when performing operations that could result in a final BSON document which exceeds the maximum allowable size (INT32\_MAX), resulting in a segmentation fault and possible application crash. This issue affected libbson versions prior to 1.27.5, MongoDB Server v8.0 versions prior to 8.0.1 and MongoDB Server v7.0 versions prior to 7.0.16

## Affected vendors and products

- MongoDB Inc: libbson
- MongoDB Inc: MongoDB Server

## Tracked companies

- [MongoDB Atlas](https://rewindex.com/company/mongodb-atlas.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-0755)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-0755)
- [https://jira.mongodb.org/browse/CDRIVER-5601](https://jira.mongodb.org/browse/CDRIVER-5601)
- [https://jira.mongodb.org/browse/SERVER-94461](https://jira.mongodb.org/browse/SERVER-94461)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-0755 · Markdown: https://rewindex.com/cve/CVE-2025-0755.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-0755 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:46.138Z