CVE-2009-4919

CRITICAL

Buffer overflow on Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allows remote attackers to have an unspecified impact via long IKE attributes, aka Bug ID...

Affects 1 product across 1 vendor.

BCS7.56
CVSS 2.010.0
EPSS2.1%
Percentile81th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
CWE Weakness Definitions
CWE-119: Improper Restriction of Operations within Memory Buffer

Parent class for buffer-related vulnerabilities where operations exceed buffer boundaries.

Related Attack Patterns (CAPEC)
CAPEC-8 Buffer Overflow in an API Call
via CWE-119
CAPEC-9 Buffer Overflow in Local Command-Line Utilities
via CWE-119
CAPEC-10 Buffer Overflow via Environment Variables
via CWE-119
CAPEC-14 Client-side Injection-induced Buffer Overflow
via CWE-119
CAPEC-24 Filter Failure through Buffer Overflow
via CWE-119
Show all 12

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 2010. A critical vulnerability affects Cisco systems (CVE-2009-4919). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2010-GLOBAL-084318-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2009-4919?
This vulnerability was disclosed in 2010. A critical vulnerability affects Cisco systems (CVE-2009-4919). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2009-4919?
CVE-2009-4919 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 2.1%.
Is CVE-2009-4919 actively exploited?
No confirmed active exploitation of CVE-2009-4919 as of 2026-09-25.
How do I remediate CVE-2009-4919?
Priority: MEDIUM. Advisory: http://www.cisco.com/en/US/docs/security/asa/asa81/release/notes/asarn812.html
What systems are affected by CVE-2009-4919?
CVE-2009-4919 affects: Cisco.
Vulnerability Details
CVE IDCVE-2009-4919
BSIDBS-2010-GLOBAL-084318-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published2010-06-29
Last Modified2026-06-16
ICS Relevance100%
Weakness (CWE)
Improper Restriction of Operations within Memory Buffer
Domains
NETWORK-INFRA
SourceNVD
Official Description

Buffer overflow on Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allows remote attackers to have an unspecified impact via long IKE attributes, aka Bug ID CSCsu43121.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: Buffer overflow on Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allows remote attackers to have an unspecified impact via long IKE attributes, aka Bug ID CSCsu43121. CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.

Exploitation Likelihood: LOW

Affected Products
VendorProductFixed Version
Cisco Asa 5580 —
Remediation
View Vendor Advisory →

Remediation Priority: MEDIUM

Threat Intelligence
● Threat Intelligence Validated: September 2026 | Threat Age: 5934 Days
CISA KEVNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash9467dbfa1dc70e03ab7bbd924fd83d118ec8340754bf2a3801696da1c01e89631e6b99b747b4a3f6f9bb154aa3c8f32db50f75b0acbd44469d58af351d9a3dc5
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