HIGH CVSS 8.4
Published: 2026-03-26

CVE-2026-22593

linuxfoundation everest Security Advisory (CVE-2026-22593)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-22593 impacting linuxfoundation everest. Evaluated with CVSS Base Score of 8.4 (HIGH).

Original NVD Description

Source: NIST NVD
EVerest is an EV charging software stack. Prior to version 2026.02.0, an off-by-one check in IsoMux certificate filename handling causes a stack-based buffer overflow when a filename length equals `MAX_FILE_NAME_LENGTH` (100). A crafted filename in the certificate directory can overflow `file_names[idx]`, corrupting stack state and enabling potential code execution. Version 2026.02.0 contains a patch.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
None (PR:N)
Unauthenticated execution
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
High (C:H)
Total information disclosure
Integrity
High (I:H)
Total modification of target system
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product linuxfoundation / everest
Affected Versions *
Weakness Enumeration CWE-193

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2026-22593 impacting linuxfoundation everest.

⚡ Nuclei Detection Template (YAML) cve-2026-22593.yaml
id: cve-2026-22593

info:
  name: linuxfoundation everest - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2026-22593 affecting linuxfoundation everest.
    Evaluation: EVerest is an EV charging software stack. Prior to version 2026.02.0, an off-by-one check in IsoMux certificate filename handling causes a stack-based...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-22593
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.4
    cve-id: CVE-2026-22593
    cwe-id: CWE-193
  tags: cve,cve-2026-22593,linuxfoundation,everest,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "everest"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-22593.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-22593
# Target: linuxfoundation everest | CVSS: 8.4 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-22593 (linuxfoundation everest)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against linuxfoundation everest scope (*).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2026-22593.sh
# Recommended Remediation & Patching Commands for CVE-2026-22593
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install everest 2>/dev/null || \
sudo dnf upgrade everest 2>/dev/null || \
sudo yum update everest

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i everest 2>/dev/null || rpm -qa | grep -i everest

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

🔗 Verified Technical References

Authorities
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-22593 in linuxfoundation everest?

Review vendor-specific security notices and update linuxfoundation everest packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2026-22593?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2026-22593?

CVE-2026-22593 is classified with a CVSS 3.1 Base Score of 8.4 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
8.4
HIGH SEVERITY
CVE ID CVE-2026-22593
Weakness CWE-193
Vendor linuxfoundation
Product everest
Published 2026-03-26
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H