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Fencer Vulns
high 8.4

CVE-2025-0755 json

MongoDB C Driver bson library may be susceptible to buffer overflow

published 2025-03-18 19 mo ago modified 2026-09-10 59 d ago also BIT-mongodb-2025-0755 , EUVD-2025-6467

cvss
8.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

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

Patch / fix

  • bitnami mongodb 7.0.16, 8.0.1
  • MongoDB Inc libbson 1.27.5
  • MongoDB Inc MongoDB Server 7.0.16, 8.0.1
  • mongo-c-driver Debian 12 1.23.1-1+deb12u1
  • mongo-c-driver Debian 14, Debian 13 1.27.5-1
  • libbson-xs-perl Debian 12 0.8.4-2+deb12u1

debian advisories DEBIAN-CVE-2025-0755

  • mongo-c-driver Ubuntu Pro 24.04 LTS 1.26.0-1.1ubuntu2+esm1

ubuntu advisories UBUNTU-CVE-2025-0755

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
19 mo ago

Exploit prediction

0.79% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami mongodb
>=7.0.0, <7.0.16
>=8.0.0, <8.0.1
7.0.16
8.0.1

Affected products

  • MongoDB Inc libbson
  • MongoDB Inc MongoDB Server

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.