Is CVE-2009-4918 being actively exploited?

CVE-2009-4918 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2009-4918?

CVE-2009-4918 has a CVSS 2.0 base score of 7.8 (HIGH).

CVE-2009-4918

HIGH · CVSS 7.8EPSS 1.4%EU EUVD

Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow remote attackers to cause a denial of service (IKE process hang) via malformed NAT-T packets, aka Bug ID CSCsr74439.

Key facts

CVSS score: 7.8 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness (CWE): CWE-20
EPSS score: 1.4% (72th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2009-4881)
Published: June 29, 2010
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-4881 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

cisco / asa 5580

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Cisco ASA 5505, 5510, 5520, 5540, 5550, 5580-20 and 5580-40 Security Appliances - Cisco Systems, Inc. - FIPS 140 1436 - historical

References

http://www.cisco.com/en/US/docs/security/asa/asa81/release/notes/asarn812.html(Patch)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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