NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
🛡️
Not in CISA KEV
MEDIUM severity

CVE-2026-120796 — Microsoft

MEDIUM

CVE-2026-120796 is a medium-severity (CVSS 5.3) CWE-407 vulnerability. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.

Published
Updated
Affected
—
Patched
—
Exploits
None indexed
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Description

Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.

Detection & mitigation playbook

Vulnerability

  1. Detect

    Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

  2. Remediation status

    The records we use list no fixed release for CVE-2026-120796. Check the upstream advisory for a patched version, and apply the exposure-reduction steps below in the meantime.

  3. Mitigate without a patch

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
O3 Security · Impact-Aware SCA

Is CVE-2026-120796 in your dependencies?

Find it across your dependency tree, including transitive dependencies.

Scan my dependencies How O3 SCA works