No exploitation reported

CVE-2016-1381

No exploitation reported by the sources we read.

Published2016-05-25
WeaknessCWE-399

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Memory leak in Cisco AsyncOS 8.5 through 9.0 before 9.0.1-162 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (memory consumption) via an HTTP file-range request for cached content, aka Bug ID CSCuw97270.

Timeline

dates in UTC

2016-05-2501:59CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-1381?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-1381?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Cisco web security applianceversion to verify

Branch	Affected	Fixed in	Source
8.5	= 8.5.0-497	no fix published	NVD
8.5	= 8.5.0.000	no fix published	NVD
8.5	= 8.5.1-021	no fix published	NVD
8.5	= 8.5.2-024	no fix published	NVD
8.5	= 8.5.2-027	no fix published	NVD
8.5	= 8.5.3-055	no fix published	NVD
9.0	= 9.0.0-193	no fix published	NVD
9.0	= 9.0_base	no fix published	NVD
9.1	= 9.1.0-000	no fix published	NVD
9.1	= 9.1_base	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

tools.cisco.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.07.5read 2026-10-23
NVDCVSS 2.07.8read 2026-10-23
NVDweakness (CWE)CWE-399read 2026-10-23
FIRST EPSSEPSS score1.4 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2016-05-25
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2016-1381?

Is CVE-2016-1381 actively exploited?

Active exploitation of CVE-2016-1381 has not been confirmed. Its EPSS score was 1.4% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-1381?

CVE-2016-1381 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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