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CVE-2020-1040

A remote code execution vulnerability exists when Hyper-V RemoteFX vGPU on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-1…

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A remote code execution vulnerability exists when Hyper-V RemoteFX vGPU on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-1032, CVE-2020-1036, CVE-2020-1041, CVE-2020-1042, CVE-2020-1043.
CVSS 9.0 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.4/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9: +1.35
  • Fresh EPSS: 7.56%: +0.04

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 11 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Propel RC
Press · 07 Jul 2026, 07:00 · How to Assign GPU to Hyper-V VM – Full Guide (2026) - Propel RC
The Hacker News
Press · 11 Dec 2024, 08:00 · U.S. Charges Chinese Hacker for Exploiting Zero-Day in 81,000 Sophos Firewalls - The Hacker News
The Hacker News
Press · 11 Nov 2024, 08:00 · THN Recap: Top Cybersecurity Threats, Tools, and Practices (Nov 04 - Nov 10) - The Hacker News
TechRadar
Press · 06 Nov 2024, 08:00 · The FBI wants the public to help it track down Chinese hackers - TechRadar
The Hacker News
Press · 05 Nov 2024, 08:00 · FBI Seeks Public Help to Identify Chinese Hackers Behind Global Cyber Intrusions - The Hacker News
See all 11 source documents
Sophos
Press · 31 Oct 2024, 07:00 · Pacific Rim timeline: Information for defenders from a braid of interlocking attack campaigns - Sophos
SecurityWeek
Press · 26 Sep 2022, 07:00 · Sophos Firewall Zero-Day Exploited in Attacks on South Asian Organizations - SecurityWeek
Help Net Security
Press · 29 Mar 2022, 07:00 · Attackers are exploiting recently patched RCE in Sophos Firewall (CVE-2022-1040) - Help Net Security
Qualys
Press · 22 Feb 2022, 08:00 · Managing CISA Known Exploited Vulnerabilities with Qualys VMDR - Qualys
Sophos
Press · 14 Jul 2020, 07:00 · It’s always DNS, including on July, 2020’s Patch Tuesday - Sophos
Cisco Talos Blog
Press · 14 Jul 2020, 07:00 · Vulnerability Spotlight: Multiple vulnerabilities in RemoteFX affects, AMD, Intel chips - Cisco Talos Blog

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.4 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9; EPSS 7.6%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
adjacent access, low privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:12.189153+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
14 Jul 2020, 07:00
Published
14 Jul 2020, 22:53
Added to the CISA KEV catalog
03 Nov 2021, 00:00
Latest press mention
07 Jul 2026, 07:00
Score calculated
05 Nov 2026, 13:58