CVE-2007-3923
CVE-2007-3923 is a high-severity vulnerability in Cisco Wide Area Application Services with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 2.0 base score 7.8)
- EPSS exploit prediction: 2% (78th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Cisco Wide Area Application Services
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2007-3923?
- 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.
- How severe is CVE-2007-3923?
- CVE-2007-3923 has a CVSS 2.0 base score of 7.8, rated high severity.
- Is CVE-2007-3923 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2007-3923?
- CVE-2007-3923 primarily affects Cisco Wide Area Application Services. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2007-3923?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2007-3923 published?
- CVE-2007-3923 was published on 2007-07-21 and last updated on 2026-06-16.
References
- http://secunia.com/advisories/26122
- http://www.cisco.com/warp/public/707/cisco-sa-20070718-waas.shtml
- http://www.osvdb.org/36120
- http://www.securityfocus.com/bid/24956
- http://www.securitytracker.com/id?1018416
- http://www.vupen.com/english/advisories/2007/2572
- https://exchange.xforce.ibmcloud.com/vulnerabilities/35477
Affected products (2)
- cpe:2.3:a:cisco:wide_area_application_services:4.0.7:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:wide_area_application_services:4.0.9:*:*:*:*:*:*:*
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