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CVE-2009-1157

23
FAUCET Score

CVE-2009-1157 describes a memory leak vulnerability in Cisco ASA 5500 Series and PIX Security Appliances across multiple versions. This flaw allows remote, unauthenticated attackers to trigger a denial of service by sending a specially crafted TCP packet, leading to memory exhaustion or device reloads. With a CVSS score of 7.8 (High), it is easily exploitable over the network with low attack complexity, resulting in a complete loss of availability. Despite its severity, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:h:cisco:adaptive_security_appliance_5500:7.0:*:*:*:*:*:*:*
7.1CPE matchmatch criteria
cpe:2.3:h:cisco:adaptive_security_appliance_5500:7.1:*:*:*:*:*:*:*
7.2CPE matchmatch criteria
cpe:2.3:h:cisco:adaptive_security_appliance_5500:7.2:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:h:cisco:adaptive_security_appliance_5500:8.0:*:*:*:*:*:*:*
8.1CPE matchmatch criteria
cpe:2.3:h:cisco:adaptive_security_appliance_5500:8.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

AV:N/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.66%
Probability of exploitation in next 30 days
EPSS Percentile
84.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0266 is in the 72nd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

osvdb.org / 53445
secunia.com / advisories/34607
cisco.com / en/US/products/products_security_advisory09186a0080a994f6.shtml
PatchVendor Advisory
securityfocus.com / bid/34429
securitytracker.com / id
vupen.com / english/advisories/2009/0981