MEDIUM CVSS 4.0
Published: 2026-01-07

CVE-2025-69255

rustfs rustfs Security Advisory (CVE-2025-69255)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-69255 impacting rustfs rustfs. Evaluated with CVSS Base Score of 4.0 (MEDIUM).

Original NVD Description

Source: NIST NVD
RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 to 1.0.0-alpha.77, a malformed gRPC GetMetrics request causes get_metrics to unwrap() failed deserialization of metric_type/opts, panicking the handler thread and enabling remote denial of service of the metrics endpoint. This issue has been patched in version 1.0.0-alpha.78.

📊 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
None (C:N)
No data confidentiality impact
Integrity
None (I:N)
No system modification impact
Availability
Low (A:L)
Partial service performance degradation

🎯 Affected Versions Matrix

Affected Product rustfs / rustfs
Affected Versions 1.0.0
Weakness Enumeration CWE-755

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-2025-69255 impacting rustfs rustfs.

⚡ Nuclei Detection Template (YAML) cve-2025-69255.yaml
id: cve-2025-69255

info:
  name: rustfs rustfs - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2025-69255 affecting rustfs rustfs.
    Evaluation: RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 to 1.0.0-alpha.77, a malformed gRPC GetMetrics request causes ...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-69255
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
    cvss-score: 4.0
    cve-id: CVE-2025-69255
    cwe-id: CWE-755
  tags: cve,cve-2025-69255,rustfs,rustfs,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "rustfs"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-69255.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-69255
# Target: rustfs rustfs | CVSS: 4.0 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-69255 (rustfs rustfs)...")
    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 rustfs rustfs scope (1.0.0).")
        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-2025-69255.sh
# Recommended Remediation & Patching Commands for CVE-2025-69255
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install rustfs 2>/dev/null || \
sudo dnf upgrade rustfs 2>/dev/null || \
sudo yum update rustfs

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

# 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
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Distributions
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❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-69255 in rustfs rustfs?

Review vendor-specific security notices and update rustfs rustfs 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-2025-69255?

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-2025-69255?

CVE-2025-69255 is classified with a CVSS 3.1 Base Score of 4.0 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.0
MEDIUM SEVERITY
CVE ID CVE-2025-69255
Weakness CWE-755
Vendor rustfs
Product rustfs
Published 2026-01-07
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L