CVE-2016-1287

What it is

Buffer overflow in the IKEv1 and IKEv2 implementations in Cisco ASA Software before 8.4(7.30), 8.7 before 8.7(1.18), 9.0 before 9.0(4.38), 9.1 before 9.1(7), 9.2 before 9.2(4.5), 9.3 before 9.3(3.7), 9.4 before 9.4(2.4), and 9.5 before 9.5(2.2) on ASA 5500 devices, ASA 5500-X devices, ASA Services Module for Cisco Catalyst 6500 and Cisco 7600 devices, ASA 1000V devices, Adaptive Security Virtual Appliance (aka ASAv), Firepower 9300 ASA Security Module, and ISA 3000 devices allows remote attackers to execute arbitrary code or cause a denial of service (device reload) via crafted UDP packets, aka Bug IDs CSCux29978 and CSCux42019.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

74.2% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

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

Timeline

1. 2016-01-04 00:00 UTC ReservedThe CVE id was reserved by its CNA
2. 2016-02-11 18:59 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-06-17 00:41 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 74.2% in the next 30 days (EPSS).
• Severity: 9.8 CRITICAL (CVSS).
• Fix: a patch or advisory is linked.
• It meets the bar for Drop everything: critical, and exploited or very likely to be.

Details

Published

2016-02-11 18:59 UTC

Last modified

2026-06-17 00:41 UTC

Exploit probability

74.2% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• Cisco Adaptive Security Appliance Software 7.2.1
• Cisco Adaptive Security Appliance Software 7.2.1.9
• Cisco Adaptive Security Appliance Software 7.2.1.13
• Cisco Adaptive Security Appliance Software 7.2.1.19
• Cisco Adaptive Security Appliance Software 7.2.1.24
• Cisco Adaptive Security Appliance Software 7.2.2
• Cisco Adaptive Security Appliance Software 7.2.2.6
• Cisco Adaptive Security Appliance Software 7.2.2.10

Attack profile CVSS 3.0 · 9.8

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

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