The Common Internet File System (CIFS) optimization in Cisco Wide Area Application Services (WAAS) 4.0.7 and 4.0.9, as used by Cisco WAE appliance and the NM-WAE-502 network module, when Edge Services are configured, allows remote attackers to cause a denial of service (loss of service) via a flood of TCP SYN packets to port (1) 139 or (2) 445.
CVE-2007-3923
NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 2%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 78.2%
- KEV
- Not listed
Published
July 21, 2007
Last Modified
April 23, 2026
References (14)
- cve@mitrehttp://secunia.com/advisories/26122
- cve@mitrehttp://www.cisco.com/warp/public/707/cisco-sa-20070718-waas.shtml
- cve@mitrehttp://www.osvdb.org/36120
- cve@mitrehttp://www.securityfocus.com/bid/24956
- cve@mitrehttp://www.securitytracker.com/id?1018416
- cve@mitrehttp://www.vupen.com/english/advisories/2007/2572
- cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/35477
- af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/26122
- af854a3a-2127-422b-91ae-364da2661108http://www.cisco.com/warp/public/707/cisco-sa-20070718-waas.shtml
- af854a3a-2127-422b-91ae-364da2661108http://www.osvdb.org/36120
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/24956
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id?1018416
- af854a3a-2127-422b-91ae-364da2661108http://www.vupen.com/english/advisories/2007/2572
- af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/35477
Frequently asked(4)
What is CVE-2007-3923?
CVE-2007-3923 is a none vulnerability published on July 21, 2007. The Common Internet File System (CIFS) optimization in Cisco Wide Area Application Services (WAAS) 4.0.7 and 4.0.9, as used by Cisco WAE appliance and the NM-WAE-502 network module, when Edge Services are configured, allows remote attackers to cause a denial of service (loss of service) via a flood…
When was CVE-2007-3923 disclosed?
CVE-2007-3923 was first published in the National Vulnerability Database on July 21, 2007, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2007-3923 actively exploited?
CVE-2007-3923 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 78.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2007-3923?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2007-3923, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2007-3923
Is Your Infrastructure Affected by CVE-2007-3923?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.