CVE-2017-6721 json
A vulnerability in the ingress processing of fragmented TCP packets by Cisco Wide Area Application Services (WAAS) could allow an unauthent…
published 2017-07-04 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-15775
- cvss
- 5.3
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.2%
- EPSS 2.2% chance of exploitation in 30 days, percentile 82%
- public exploits
- 0
- none known
Summary
A vulnerability in the ingress processing of fragmented TCP packets by Cisco Wide Area Application Services (WAAS) could allow an unauthenticated, remote attacker to cause the WAASNET process to restart unexpectedly, causing a denial of service (DoS) condition. More Information: CSCvc57428. Known Affected Releases: 6.3(1). Known Fixed Releases: 6.3(0.143) 6.2(3c)6 6.2(3.22).
Exploit prediction
2.20% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- n/a Cisco Wide Area Application Services
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
tools.cisco.com
/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170621-waas
vendor-advisory
-
securitytracker.com
/id/1038747
vdb-entry, third-party-advisory
-
securityfocus.com
/bid/99200
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2017-6721
- NVD CVE-2017-6721
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