What is the CVSS score of CVE-2019-25327?

CVE-2019-25327 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Which versions of DNS are affected by CVE-2019-25327?

CVE-2019-25327 is a critical remote code execution vulnerability affecting Prime95 v29.8 build 6 that allows attackers to execute arbitrary commands by exploiting buffer overflow in user input…

Is there a public PoC exploit available for CVE-2019-25327?

Yes, a public proof-of-concept exploit is available for CVE-2019-25327. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2019-25327?

Within 24 hours: Inventory all systems running Prime95 v29.8 build 6 and isolate affected machines from production networks if feasible. Within 7 days: Disable Prime95 or restrict network access to affected systems using firewall rules, prohibit external connections to port 3110, and enforce input validation controls. Within 30 days: Plan upgrade to Prime95 v30.x or later versions once patches are released, and conduct forensic review for indicators of compromise on all affected systems.

DNS CVE-2019-25327

CRITICAL

Heap-based Buffer Overflow (CWE-122)

2026-02-12 disclosure@vulncheck.com

Buffer Overflow DNS

9.8

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

PoC Detected

Feb 13, 2026 - 14:23 vuln.today

Public exploit code

CVE Published

Feb 12, 2026 - 23:16 nvd

CRITICAL 9.8

DescriptionNVD

Prime95 version 29.8 build 6 contains a buffer overflow vulnerability in the user ID input field that allows remote attackers to execute arbitrary code. Attackers can craft a malicious payload and paste it into the PrimeNet user ID and proxy host fields to trigger a bind shell on port 3110.

AnalysisAI

Buffer overflow in Prime95 29.8 build 6 user ID field allows code execution. PoC available.

Technical ContextAI

CWE-122 heap overflow.

Affected ProductsAI

Prime95 29.8 build 6

RemediationAI

Update Prime95.

CVE-2019-25327 vulnerability details – vuln.today

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DNS CVE-2019-25327

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

Affected ProductsAI

RemediationAI

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External POC / Exploit Code