CVE-2016-6437

highpriority · track · 25EPSS 0.017 · 78 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.73% (78th) EPSS

CVSS 7.1 · high

Is it mine?

14 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

A vulnerability in the SSL session cache management of Cisco Wide Area Application Services (WAAS) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to high consumption of disk space. The user would see a performance degradation. More Information: CSCva03095. Known Affected Releases: 5.3(5), 6.1(1), 6.2(1). Known Fixed Releases: 5.3(5g)1, 6.2(2.32).

cvss

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.4–7.1

v2.07.1highAV:N/AC:M/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 6.9

v3.05.9mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.2 · impact 3.6

v3.05.4mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-399USprimary

affected products (14)

Products and version ranges known to be affected.

n/a Cisco Wide Area Application Services (WAAS) before 5.3(5g)1 and 6.x before 6.2(2.32)≤ Cisco Wide Area Application Services (WAAS) before 5.3(5g)1 and 6.x before 6.2(2.32)enisa_euvdEU
cisco wide area application services= 5.3.1nvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 5.3.3nvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 5.3.5nvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 5.3.5anvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 5.3.5bnvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 5.3.5cnvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 5.3.5dnvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 5.3.5envdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 5.3.5fnvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 6.1.0nvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 6.1.1nvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 6.2.1nvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*
cisco wide area application services= 6.2.1anvdUScpe:2.3:a:cisco:wide_area_application_services:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2016-10-27modified 2026-06-17

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+3721 more

references (7)

External citations — patches, advisories, analysis.

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