CVE-2017-16845

CRITICAL

hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-of-bounds access.

Affects 3 products across 3 vendors.

CVSS 3.110.0
EPSS2.9%
Percentile87th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, can impact systems beyond the vulnerable component, full confidentiality impact, no integrity impact, full availability impact.
CWE Weakness Definitions
CWE-20: Improper Input Validation

Software does not validate or incorrectly validates input, allowing attackers to craft data processed in unintended ways.

Related Attack Patterns (CAPEC)
CAPEC-3 Using Leading 'Ghost' Character Sequences to Bypass Input Filters
via CWE-20
CAPEC-7 Blind SQL Injection
via CWE-20
CAPEC-8 Buffer Overflow in an API Call
via CWE-20
CAPEC-9 Buffer Overflow in Local Command-Line Utilities
via CWE-20
CAPEC-10 Buffer Overflow via Environment Variables
via CWE-20
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Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 2017. A critical vulnerability affects Canonical systems (CVE-2017-16845). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2017-GLOBAL-229989-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2017-16845?
This vulnerability was disclosed in 2017. A critical vulnerability affects Canonical systems (CVE-2017-16845). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2017-16845?
CVE-2017-16845 has CVSS 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H. EPSS: 2.9%.
Is CVE-2017-16845 actively exploited?
No confirmed active exploitation of CVE-2017-16845 as of 2026-09-25.
How do I remediate CVE-2017-16845?
Priority: MEDIUM.
What systems are affected by CVE-2017-16845?
CVE-2017-16845 affects Canonical Ubuntu Linux; Debian Debian Linux; Qemu Qemu.
Vulnerability Details
CVE IDCVE-2017-16845
BSIDBS-2017-GLOBAL-229989-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H
Published2017-11-17
Last Modified2026-06-17
ICS Relevance0%
Weakness (CWE)
Improper Input Validation
SourceNVD
Official Description

hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-of-bounds access.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-of-bounds access. CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H.

Exploitation Likelihood: LOW

Affected Products
VendorProductAffected Versions
Canonical Ubuntu Linux 14.04 16.04 17.10 18.04
Debian Debian Linux 8.0 9.0
Qemu Qemu ≤ 2.11.2
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 3254 Days
CISA known-exploitedNot 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 Hash15d3141fe62790c198b1d76f43782d2e5d13da009d67b3cacdd9f40ecbb261ce2f837c0a213e5d1caef2c98c606faf9f83bc5d727bd95796d6c803e6f93f2cf4
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