CVE-2025-49179 – This integer overflow vulnerability in the X Re... (How to Fix)

Q: What is the severity of CVE-2025-49179?

CVE-2025-49179 has a CVSS score of 7.3 (HIGH). This integer overflow vulnerability in the X Record extension allows attackers to bypass length checks by manipulating request length calculations. Systems using vulnerable versions of the X Record extension are affected, potentially allowing unauthorized access or system compromise.

📋 TL;DR

This integer overflow vulnerability in the X Record extension allows attackers to bypass length checks by manipulating request length calculations. Systems using vulnerable versions of the X Record extension are affected, potentially allowing unauthorized access or system compromise.

💻 Affected Systems

Products:

X Record extension

Versions: Specific versions not provided in CVE description; check Red Hat advisories for affected versions

Operating Systems: Linux distributions with X Record extension

Default Config Vulnerable: ⚠️ Yes

Notes: Affects systems with X Record extension enabled; check Red Hat advisories for specific product versions

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:

Review the CVE details at NVD
Check vendor security advisories for your specific version
Test if the vulnerability is exploitable in your environment
Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to complete system compromise, privilege escalation, or denial of service.

🟠

Likely Case

Memory corruption leading to application crashes, denial of service, or limited information disclosure.

🟢

If Mitigated

Contained impact with proper network segmentation and least privilege controls limiting lateral movement.

🌐 Internet-Facing: MEDIUM

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ⚠️ Yes

Complexity: MEDIUM

Integer overflow vulnerabilities typically require specific conditions to exploit but can be leveraged by skilled attackers

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Check Red Hat advisories for specific patched versions

Vendor Advisory: https://access.redhat.com/errata/RHSA-2025:10258

Restart Required: Yes

Instructions:

1. Check affected systems using provided Red Hat advisories
2. Apply vendor patches from Red Hat repositories
3. Restart affected services or systems
4. Verify patch application

🔧 Temporary Workarounds

Disable X Record Extension

linux

Temporarily disable the vulnerable X Record extension if not required

Check system documentation for X Record disable commands

🧯 If You Can't Patch

Implement network segmentation to isolate vulnerable systems
Apply strict access controls and monitor for exploitation attempts

🔍 How to Verify

Check if Vulnerable:

Check installed X Record extension version against Red Hat advisories

Check Version:

Check package manager for X Record extension version (e.g., rpm -qa | grep xrecord)

Verify Fix Applied:

Verify patched version is installed and no longer vulnerable

📡 Detection & Monitoring

Log Indicators:

Unusual X Record extension activity
Memory allocation errors
Application crashes

Network Indicators:

Abnormal requests to X Record service
Traffic patterns indicating exploitation attempts

SIEM Query:

Search for X Record extension errors or crashes in system logs

📊 Metadata

CVE ID: CVE-2025-49179

CVSS v3 Score: 7.3 (HIGH)

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

CWE: CWE-190

EPSS Score: 0.03% exploit probability (9.1th percentile)

Published: June 17, 2025

Last Updated: December 11, 2025

🔗 References

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