Cyber Resilience

CVE-2026-93993

Public PoC
Published
19 September 2026
Modified
22 September 2026
CVSS Score v4 8.6
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/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
EPSS Score 0.0087 57th percentile
Risk Priority 55 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2026-93993 is a high-severity Inclusion of Functionality from Untrusted Control Sphere (CWE-829) vulnerability. Its CVSS base score is 8.6 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Software Extensions (T1176); ranked in the top 43% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

This vulnerability is AI-related — categorised as Other AI Platforms.

The strongest mitigations our analysis identified map to SR-11 (Component Authenticity) and SR-3 (Supply Chain Controls and Processes) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A08:2025 Software or Data Integrity Failures

EU & UK References

Vulnerability Data

Mistral Vibe before 2.25.5 contains a remote code execution vulnerability in the worktree creation process that executes git hooks before trust validation. Attackers can supply a repository with a crafted post-checkout hook that executes arbitrary shell commands with the privileges…

more

of the user running Vibe.

CWE(s)
CWE-829

AI Security AnalysisAI

AI Category
Other AI Platforms
Risk Domain
N/A
OWASP Top 10 for LLMs 2025
None mapped
Classification Reason
Matched keywords: mistral

Related Threats

MITRE ATT&CK Enterprise Techniques

T1176 Software Extensions Persistence
Adversaries may abuse software extensions to establish persistent access to victim systems.
attack.mitre.org →
T1195.001 Compromise Software Dependencies and Development Tools Initial Access
Adversaries may manipulate software dependencies and development tools prior to receipt by a final consumer for the purpose of data or system compromise.
attack.mitre.org →
T1505.004 IIS Components Persistence
Adversaries may install malicious components that run on Internet Information Services (IIS) web servers to establish persistence.
attack.mitre.org →
T1505.005 Terminal Services DLL Persistence
Adversaries may abuse components of Terminal Services to enable persistent access to systems.
attack.mitre.org →
T1574.006 Dynamic Linker Hijacking Stealth
Adversaries may execute their own malicious payloads by hijacking environment variables the dynamic linker uses to load shared libraries.
attack.mitre.org →
T1055 Process Injection Stealth
Adversaries may inject code into processes in order to evade process-based defenses as well as possibly elevate privileges.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-67623Shared CWE-829
CVE-2026-76139Shared CWE-829
CVE-2025-53841Shared CWE-829
CVE-2026-1699Shared CWE-829
CVE-2026-49986Shared CWE-829
CVE-2026-71471Shared CWE-829
CVE-2026-47174Shared CWE-829
CVE-2025-41390Shared CWE-829
CVE-2026-4255Shared CWE-829
CVE-2026-41336Shared CWE-829

Affected Assets

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 6 hardening rules · 6 OS baselines
Validate
Prove the fix (OWASP ASVS)
  • V14.2.3
  • V3.5.6
  • V9.1.3
  • V15.3.2

Mitigating Controls (NIST 800-53 r5) AI

SR-11 Component Authenticity partial match

Implements detection and prevention of counterfeit or inauthentic components before they are integrated.

SR-3 Supply Chain Controls and Processes partial match

Establishes processes to identify and address supply-chain weaknesses that would allow untrusted functionality.

SR-4 Provenance partial match

Requires documented, valid provenance for components, preventing acceptance of code from outside the trusted sphere.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

GV.SC-01 partial match
prevents

Supply-chain program directly governs inclusion of third-party executable code.

GV.SC-05 partial match
prevents

Contractual requirements can mandate trusted sources and integrity checks for included functionality.

GV.SC-07 partial match
prevents

Supplier risk assessment explicitly covers risks from their products and libraries.

ID.AM-02 partial match
prevents

Software inventory enables tracking of externally sourced components but does not itself enforce trust.

ID.RA-09 partial match
prevents

Pre-acquisition integrity/authenticity checks directly prevent inclusion of untrusted code.

ID.RA-10 partial match
prevents

Critical-supplier assessment reduces risk of importing executable functionality from untrusted parties.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.21 Managing information security in the ICT supply chain partial match
prevents

By requiring suppliers to propagate security requirements and to disclose component provenance, the control limits the inclusion of functionality obtained from untrusted third-party sources without oversight.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (higher-evidence rows only; rows rated `none` are excluded).

Oracle Linux 8 (1 rule)
  • V-248635 prevents CWE-829
Oracle Linux 9 (1 rule)
  • V-271847 OL 9 must be configured so that executable search paths within the initialization files of all local interactive users must only contain paths that resolve to the system default or the users home directory. prevents CWE-829
RHEL 7 (1 rule)
  • V-204477 prevents CWE-829
RHEL 8 (1 rule)
  • V-230317 prevents CWE-829
RHEL 9 (1 rule)
  • V-258050 prevents CWE-829
Windows 10 (1 rule)
  • V-220737 Administrative accounts must not be used with applications that access the Internet, such as web browsers, or with potential Internet sources, such as email. prevents CWE-829

References