CVE-2009-0638
CVE-2009-0638 is a high-severity vulnerability in Cisco Firewall Services Module 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: 3% (85th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Cisco Firewall Services Module
- Published:
- Last modified:
Description
The Cisco Firewall Services Module (FWSM) 2.x, 3.1 before 3.1(16), 3.2 before 3.2(13), and 4.0 before 4.0(6) for Cisco Catalyst 6500 switches and Cisco 7600 routers allows remote attackers to cause a denial of service (traffic-handling outage) via a series of malformed ICMP messages.
Frequently asked questions
- What is CVE-2009-0638?
- The Cisco Firewall Services Module (FWSM) 2.x, 3.1 before 3.1(16), 3.2 before 3.2(13), and 4.0 before 4.0(6) for Cisco Catalyst 6500 switches and Cisco 7600 routers allows remote attackers to cause a denial of service (traffic-handling outage) via a series of malformed ICMP messages.
- How severe is CVE-2009-0638?
- CVE-2009-0638 has a CVSS 2.0 base score of 7.8, rated high severity.
- Is CVE-2009-0638 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2009-0638?
- CVE-2009-0638 primarily affects Cisco Firewall Services Module. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2009-0638?
- 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-2009-0638 published?
- CVE-2009-0638 was published on 2009-08-21 and last updated on 2026-06-16.
References
- http://secunia.com/advisories/36373
- http://securitytracker.com/id?1022747
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080af0d1d.shtml
- http://www.securityfocus.com/bid/36085
- http://www.vupen.com/english/advisories/2009/2329
- https://exchange.xforce.ibmcloud.com/vulnerabilities/52591
Affected products (14)
- cpe:2.3:h:cisco:firewall_services_module:2.1_\(0.208\):*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:2.2:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:2.2\(1\):*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:2.3:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:2.3\(1\):*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:3.1:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:3.1\(5\):*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:3.1\(6\):*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:3.2:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:3.2\(1\):*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:3.2\(2\):*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:3.2\(3\):*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:4.0:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:firewall_services_module:4.0\(4\):*:*:*:*:*:*:*
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