CVE-2012-3570

What it is

Buffer overflow in ISC DHCP 4.2.x before 4.2.4-P1, when DHCPv6 mode is enabled, allows remote attackers to cause a denial of service (segmentation fault and daemon exit) via a crafted client identifier parameter.

At a glance

Exploitability

Can be exploited from the same network segment without logging in. High risk of service disruption.

Exploit odds

2.6% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2012-07-25 10:42 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:43 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 2.6% in the next 30 days (EPSS).
• Severity: 5.7 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2012-07-25 10:42 UTC

Last modified

2026-06-16 23:43 UTC

Exploit probability

2.6% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• Isc Dhcp 4.2.0
• Isc Dhcp 4.2.1
• Isc Dhcp 4.2.2
• Isc Dhcp 4.2.3
• Isc Dhcp 4.2.4

Attack profile CVSS 2.0 · 5.7

Attack vector

Adjacent network

Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Is it in your code?

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