CVE-2019-18960

CRITICAL

Firecracker vsock implementation buffer overflow in versions 0.18.0 and 0.19.0. This can result in potentially exploitable crashes.

Affects 1 product across 1 vendor.

BCS7.56
CVSS 3.19.8
EPSS3.3%
Percentile87th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-120: Buffer Copy without Checking Size (Classic Buffer Overflow)

Program copies data to a buffer without verifying the source data fits within the destination.

Related Attack Patterns (CAPEC)
CAPEC-8 Buffer Overflow in an API Call
via CWE-120
CAPEC-9 Buffer Overflow in Local Command-Line Utilities
via CWE-120
CAPEC-10 Buffer Overflow via Environment Variables
via CWE-120
CAPEC-14 Client-side Injection-induced Buffer Overflow
via CWE-120
CAPEC-24 Filter Failure through Buffer Overflow
via CWE-120
Show all 13

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

◆ SAGE Intelligence — CITED Relevance Research Team

This vulnerability was disclosed in 2019. A critical vulnerability affects Amazon systems (CVE-2019-18960). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2019-GLOBAL-199855-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2019-18960?
This vulnerability was disclosed in 2019. A critical vulnerability affects Amazon systems (CVE-2019-18960). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2019-18960?
CVE-2019-18960 has CVSS 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS: 3.3%.
Is CVE-2019-18960 actively exploited?
No confirmed active exploitation of CVE-2019-18960 as of 2026-05-30.
How do I remediate CVE-2019-18960?
Priority: MEDIUM.
What systems are affected by CVE-2019-18960?
CVE-2019-18960 affects: Amazon.
Vulnerability Details
CVE IDCVE-2019-18960
BSIDBS-2019-GLOBAL-199855-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published2019-12-11
Last Modified2024-11-21
ICS Relevance15%
Weakness (CWE)
Buffer Copy without Checking Size (Classic Buffer Overflow)
Domains
CLOUD
SourceNVD
Official Description

Firecracker vsock implementation buffer overflow in versions 0.18.0 and 0.19.0. This can result in potentially exploitable crashes.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: Firecracker vsock implementation buffer overflow in versions 0.18.0 and 0.19.0. This can result in potentially exploitable crashes. CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Exploitation Likelihood: LOW

Affected Products
VendorProductFixed Version
Amazon Firecracker —
Remediation

No patch URL on record. Monitor vendor security advisories directly.

Threat Intelligence
● Threat Intelligence Validated: July 2026 | Threat Age: 2418 Days
CISA KEVNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
SAGE Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hashebcad45d75644e0bfa23c7d9a9c6ec274f9a93add2d95b8ff89d4d943d10167956f07db89f161047383625272d0fe1257244ee7a3aba0b8f68497709d7c553d1
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