DEBIAN-CVE-2026-93393

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Source

https://security-tracker.debian.org/tracker/CVE-2026-93393

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93393.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-93393

Upstream

CVE-2026-93393

Published

2026-09-17T21:17:56Z

Modified

2026-09-19T09:00:07Z

Severity

9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/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 Calculator

Summary

[none]

Details

A heap-based buffer overflow exists in the TLS transport layer of the MongoDB C Driver when built with the Windows platform TLS backend. A remote endpoint that the client connects to can cause the driver to write uncontrolled data outside the bounds of a heap allocation while processing incoming encrypted traffic after the TLS handshake completes. No authentication or user interaction is required, because the affected processing occurs before any application-level authentication completes. Triggering this issue may lead to memory corruption in the client process, disclosure of adjacent heap memory, or termination of the process.

References

https://security-tracker.debian.org/tracker/CVE-2026-93393

Affected packages

Debian:12 / mongo-c-driver

Package

Name: mongo-c-driver
Purl: pkg:deb/debian/mongo-c-driver?arch=source&distro=bookworm

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.23.1-1

1.23.1-1+deb12u1

1.23.1-1+deb12u2

1.23.1-1+deb12u3

1.24.1-1

1.24.2-1

1.24.3-1

1.24.4-1

1.25.0-1

1.25.1-1

1.25.2-1

1.25.4-1

1.25.4-1.1~exp1

1.26.0-1

1.26.0-1.1~exp1

1.26.0-1.1

1.26.1-1

1.26.2-1

1.27.0-1

1.27.1-1

1.27.2-1

1.27.3-1

1.27.4-1

1.27.5-1

1.27.6-1

1.28.0-1

1.28.1-1

1.29.0-1

1.29.1-1

1.29.2-1

1.30.0-1

1.30.1-1

1.30.2-1

1.30.3-1

1.30.4-1

2.*

2.0.2-1

2.1.0-1

2.1.1-1

2.1.2-1

2.2.0-1

2.2.1-1

2.2.2-1

2.2.3-1

2.2.4-1

2.3.0-1

2.3.1-1

2.3.2-1

2.3.3-1

2.4.0-1

2.5.0-1

2.5.1-1

2.5.2-1

2.5.3-1

Ecosystem specific

{
    "urgency": "unimportant"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93393.json"

Debian:13 / mongo-c-driver

Package

Name: mongo-c-driver
Purl: pkg:deb/debian/mongo-c-driver?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.30.4-1

1.30.4-1+deb13u1

1.30.4-1+deb13u2

1.30.4-1+deb13u3

2.*

2.0.2-1

2.1.0-1

2.1.1-1

2.1.2-1

2.2.0-1

2.2.1-1

2.2.2-1

2.2.3-1

2.2.4-1

2.3.0-1

2.3.1-1

2.3.2-1

2.3.3-1

2.4.0-1

2.5.0-1

2.5.1-1

2.5.2-1

2.5.3-1

Ecosystem specific

{
    "urgency": "unimportant"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93393.json"

Debian:14 / mongo-c-driver

Package

Name: mongo-c-driver
Purl: pkg:deb/debian/mongo-c-driver?arch=source&distro=forky

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.30.4-1

2.*

2.0.2-1

2.1.0-1

2.1.1-1

2.1.2-1

2.2.0-1

2.2.1-1

2.2.2-1

2.2.3-1

2.2.4-1

2.3.0-1

2.3.1-1

2.3.2-1

2.3.3-1

2.4.0-1

2.5.0-1

2.5.1-1

2.5.2-1

2.5.3-1

Ecosystem specific

{
    "urgency": "unimportant"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93393.json"