CVE-2025-12119

Bulk write with options may read invalid memory

6.9 MediumFix available

A mongoc_bulk_operation_t may read invalid memory if large options are passed.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: Low

Exploit likelihood

0.21%Up 0.2 points since Nov 19, 2025

What each source reports

CVE List Score used 6.9

Bulk write with options may read invalid memory

A mongoc_bulk_operation_t may read invalid memory if large options are passed.

Record: CVE-2025-12119
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Weakness: CWE-825
Updated: 2026-11-02

EUVDEUVD-2025-198092 6.9

A mongoc_bulk_operation_t may read invalid memory if large options are passed.

Record: EUVD-2025-198092
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-mwcc-7vpp-xmv9 6.9

MongoDB driver extension affected by mongoc_bulk_operation_t's read of invalid memory

A mongoc_bulk_operation_t may read invalid memory if large options are passed.

Record: GHSA-mwcc-7vpp-xmv9
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Weakness: CWE-825
Updated: 2026-11-02

NVD 6.9

A mongoc_bulk_operation_t may read invalid memory if large options are passed.

Record: CVE-2025-12119
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-825
Updated: 2026-11-02

OSV 6.9

Bulk write with options may read invalid memory

A mongoc_bulk_operation_t may read invalid memory if large options are passed.

Record: CVE-2025-12119
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness: CWE-825
Updated: 2026-11-02

OSVDEBIAN-CVE-2025-12119 3.3

A mongoc_bulk_operation_t may read invalid memory if large options are passed.

Record: DEBIAN-CVE-2025-12119
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

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OSVGHSA-mwcc-7vpp-xmv9 6.9

MongoDB driver extension affected by mongoc_bulk_operation_t's read of invalid memory

A mongoc_bulk_operation_t may read invalid memory if large options are passed.

Record: GHSA-mwcc-7vpp-xmv9
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Weakness: CWE-825
Updated: 2026-11-02

OSVJLSEC-2026-181 6.9

A mongoc_bulk_operation_t may read invalid memory if large options are passed.

Record: JLSEC-2026-181
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

OSVOESA-2025-2821 6.9

mongo-c-driver security update

Security Fix(es):

A mongoc_bulk_operation_t may read invalid memory if large options are passed.(CVE-2025-12119)

Record: OESA-2025-2821
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVOESA-2025-2822 6.9

mongo-c-driver security update

Security Fix(es):

A mongoc_bulk_operation_t may read invalid memory if large options are passed.(CVE-2025-12119)

Record: OESA-2025-2822
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVOESA-2025-2823 6.9

mongo-c-driver security update

Security Fix(es):

A mongoc_bulk_operation_t may read invalid memory if large options are passed.(CVE-2025-12119)

Record: OESA-2025-2823
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVOESA-2025-2824 6.9

mongo-c-driver security update

Security Fix(es):

A mongoc_bulk_operation_t may read invalid memory if large options are passed.(CVE-2025-12119)

Record: OESA-2025-2824
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVOESA-2025-2890 6.9

mongo-c-driver security update

Security Fix(es):

A mongoc_bulk_operation_t may read invalid memory if large options are passed.(CVE-2025-12119)

Record: OESA-2025-2890
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVOESA-2026-1745 6.9

mongo-c-driver security update

mongo-c-driver is a project that includes two libraries: libmongoc, a client library written in C for MongoDB. libbson, a library providing useful routines related to building, parsing, and iterating BSON documents.

Security Fix(es):

A mongoc_bulk_operation_t may read invalid memory if large options are passed.(CVE-2025-12119)

A compromised third party cloud server or man-in-the-middle attacker could send a malformed HTTP response and cause a crash in applications using the MongoDB C driver.(CVE-2026-4359)

Record: OESA-2026-1745
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVUBUNTU-CVE-2025-12119 6.9

A mongoc_bulk_operation_t may read invalid memory if large options are passed.

Record: UBUNTU-CVE-2025-12119
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`mongodb/mongodb-extension` Packagist	before 1.21.2	1.21.2
`mongo-c-driver` Debian:12	before 1.23.1-1+deb12u2, plus listed versions 1.23.1-11.23.1-1+deb12u1	1.23.1-1+deb12u2
`mongo-c-driver` Debian:13	before 1.30.4-1+deb13u1, plus listed versions 1.30.4-1	1.30.4-1+deb13u1
`mongo-c-driver` Debian:14	before 2.1.2-1, plus listed versions 1.30.4-12.0.2-12.1.0-12.1.1-1	2.1.2-1
`mongo-c-driver` Debian:11	before 1.17.6-1+deb11u2, plus listed versions 1.17.6-11.17.6-1+deb11u1	1.17.6-1+deb11u2
`mongodb/mongodb-extension` Packagist	before 1.21.2, plus listed versions 0.1.00.1.10.1.20.1.30.1.4 Show 45 moreShow less 0.1.50.2.00.3.00.3.10.4.00.4.10.5.00.5.10.6.00.6.10.6.20.6.31.0.01.0.0RC01.0.0alpha11.0.0alpha21.0.0beta11.0.0beta21.0.11.1.01.1.11.1.101.1.21.1.31.1.41.1.51.1.61.1.71.1.81.1.91.2.01.2.0alpha11.2.0alpha21.2.0alpha31.2.11.2.101.2.111.2.21.2.31.2.41.2.51.2.61.2.71.2.81.2.9	1.21.2
`MongoC_jll` Julia	before 1.30.8+0	1.30.8+0
`mongo-c-driver` openEuler:22.03-LTS-SP3	before 1.30.6-1.oe2203sp3	1.30.6-1.oe2203sp3
`mongo-c-driver` openEuler:22.03-LTS-SP4	before 1.30.6-1.oe2203sp4	1.30.6-1.oe2203sp4
`mongo-c-driver` openEuler:24.03-LTS	before 1.30.6-1.oe2403	1.30.6-1.oe2403

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Affected packages
Package	Affected	Fixed
`mongo-c-driver` openEuler:24.03-LTS-SP1	before 1.30.6-1.oe2403sp1	1.30.6-1.oe2403sp1
`mongo-c-driver` openEuler:24.03-LTS-SP2	before 1.30.6-1.oe2403sp2	1.30.6-1.oe2403sp2
`mongo-c-driver` openEuler:20.03-LTS-SP4 From an advisory covering 2 CVEs	before 1.27.4-2.oe2003sp4	1.27.4-2.oe2003sp4
`php-mongodb` Ubuntu:16.04:LTS	All versions, plus listed versions 1.1.2-2~ubuntu11.1.5-1~build1	None known
`php-mongodb` Ubuntu:18.04:LTS	All versions, plus listed versions 1.2.3-1build11.3.4-1build1	None known
`mongo-c-driver` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 1.15.0-11.15.1-11.15.2-11.16.0-11.16.1-11.16.1-1build11.16.1-1build21.16.1-1ubuntu0.1~esm1	None known
`php-mongodb` Ubuntu:20.04:LTS	All versions, plus listed versions 1.5.5-1build11.6.1-41.6.1-4build1	None known
`php-mongodb` Ubuntu:22.04:LTS	All versions, plus listed versions 1.9.0+1.7.5-2build21.11.1+1.9.2+1.7.5-41.12.0+1.9.2+1.7.5-31.12.0+1.9.2+1.7.5-4	None known
`mongo-c-driver` Ubuntu:Pro:22.04:LTS	All versions, plus listed versions 1.18.0-11.19.1-11.19.2-11.20.0-11.20.0-1build1 Show 4 moreShow less 1.20.1-11.21.0-11.21.0-1build11.21.0-1ubuntu0.1~esm1	None known
`php-mongodb` Ubuntu:24.04:LTS	All versions, plus listed versions 1.15.0+1.11.1+1.9.2+1.7.5-1build11.15.0+1.11.1+1.9.2+1.7.5-1ubuntu11.15.0+1.11.1+1.9.2+1.7.5-1ubuntu21.15.0+1.11.1+1.9.2+1.7.5-1ubuntu3	None known
`mongo-c-driver` Ubuntu:Pro:24.04:LTS	All versions, plus listed versions 1.24.3-11.24.4-11.25.1-11.25.2-11.25.4-1 Show 4 moreShow less 1.26.0-11.26.0-1.1ubuntu11.26.0-1.1ubuntu21.26.0-1.1ubuntu2+esm1	None known
`mongo-c-driver` Ubuntu:25.10	All versions, plus listed versions 1.30.2-11.30.4-1ubuntu1	None known
`php-mongodb` Ubuntu:25.10	All versions, plus listed versions 1.21.0-12.0.0-12.1.0-1	None known
`php-mongodb` Ubuntu:26.10	All versions, plus listed versions 2.1.7-0ubuntu12.1.7-0ubuntu2	None known
`mongo-c-driver` Ubuntu:26.04:LTS	All versions, plus listed versions 1.30.4-1ubuntu12.2.0-12.2.1-12.2.2-1	None known
`php-mongodb` Ubuntu:26.04:LTS	All versions, plus listed versions 2.1.0-12.1.7-0ubuntu1	None known

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-12119 is a medium vulnerability (CVSS 6.9) in Mongodb C Driver, published November 18, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. Fixed in mongodb/mongodb-extension 1.21.2.

References

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This page doesn't list everything

Left out here: 4 versions. The JSON record has them.