What is CVE-2016-1436?

CVE-2016-1436 is a high-severity vulnerability in Cisco Asr 5000 Software, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2016-06-23.

How severe is CVE-2016-1436?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Cisco Asr 5000 Software

CVE-2016-1436

The General Packet Radio Switching Tunneling Protocol 1 (aka GTPv1) implementation on Cisco ASR 5000 Packet Data Network Gateway devices before 19.4 allows remote attackers to cause a denial of service (Session Manager process restart) via a crafted GTPv1 packet, aka Bug ID CSCuz46198.

Vulnerability class: Buffer Overflow

Published 2016-06-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.7th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Cisco Asr 5000 Software — versions 17.2.0, 17.2.0.59184, 17.3.1

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160621… (vendor-advisory, Vendor Advisory)
www.securitytracker.com/id/1036152 (vdb-entry)

Frequently asked questions

What is CVE-2016-1436?: CVE-2016-1436 is a high-severity vulnerability in Cisco Asr 5000 Software, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2016-06-23.
How severe is CVE-2016-1436?: High severity. CVSS v3 base score is 7.5 out of 10.