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CVE-2016-1287

81
FAUCET Score

CVE-2016-1287 describes a critical buffer overflow vulnerability in the IKEv1 and IKEv2 implementations of Cisco ASA Software, affecting various ASA 5500, ASA 5500-X, and other ASA-based devices. This flaw allows remote, unauthenticated attackers to execute arbitrary code or trigger a denial of service (device reload) by sending specially crafted UDP packets. With a CVSS score of 9.8 (CRITICAL), the vulnerability is easily exploitable over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, exploit code is publicly available on ExploitDB, and the vulnerability has garnered significant community discussion and media coverage, indicating a high level of awareness.

Impacted Technologies

VendorProductVersion(s)CPE
7.2.1CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2.1:*:*:*:*:*:*:*
7.2.1.9CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2.1.9:*:*:*:*:*:*:*
7.2.1.13CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2.1.13:*:*:*:*:*:*:*
7.2.1.19CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2.1.19:*:*:*:*:*:*:*
7.2.1.24CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:7.2.1.24:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/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 Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
76.98%
Probability of exploitation in next 30 days
EPSS Percentile
99.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-39823 · May 17, 2016
This CVE's current EPSS score of 0.7698 is in the 98th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

packetstormsecurity.com / files/137100/Cisco-ASA-Software-IKEv1-IKEv2-Buffer-Overflow.html
ExploitThird Party AdvisoryVDB Entry
blog.exodusintel.com / 2016/02/10/firewall-hacking
ExploitTechnical DescriptionThird Party Advisory
exploit-db.com / exploits/39823
ExploitThird Party AdvisoryVDB Entry
kb.cert.org / vuls/id/327976
Third Party AdvisoryUS Government Resource
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20160210-asa-ike
Vendor Advisory
securitytracker.com / id/1034997
Third Party AdvisoryVDB Entry