CVE-2020-11869

Guest-triggered process crash via blit integer overflow

Published Apr 27, 2020 · Updated Aug 4, 2024

Integer overflow in QEMU 4.0.1 through 4.2.0 allows guest OS users to crash the QEMU process through crafted ATI VGA MMIO writes. The ati_2d_blt() routine lets programmed destination coordinates exceed their validated limits, causing address arithmetic to wrap before pixman_blt() performs an out-of-bounds memory access. Guest access to an emulated ATI VGA device is required, and exploitation interrupts the affected virtual machine by terminating its QEMU process.

CVSS severity3.3
Low
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in QEMU 4.0.1 through 4.2.0 allows guest OS users to crash the QEMU process through crafted ATI VGA MMIO writes. The ati_2d_blt() routine lets programmed destination coordinates exceed their validated limits, causing address arithmetic to wrap before pixman_blt() performs an out-of-bounds memory access. Guest access to an emulated ATI VGA device is required, and exploitation interrupts the affected virtual machine by terminating its QEMU process.

The record

CVE
CVE-2020-11869
Published
Apr 27, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-190, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 27, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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