8.2

CVE-2020-35517: qemu Improper Privilege Management

Modified
AliasesRHSA-2021:0711RHSA-2021:0743DEBIAN-CVE-2020-35517
Published 28-01-2021Last modified 04-08-2024

Vulnerability summary

CVE-2020-35517 is a high (CVSS 8.2) Improper Privilege Management vulnerability in qemu. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 45% of scored vulnerabilities. 2 public exploits are recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
8.2/10
010
High · v3.1 (NVD)
EPSS score
0.53%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2reference

Advisory lineage

Upstream 0 · Downstream 1

Timeline

  1. 28-01-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.53%

Chance of exploitation in the next 30 days

Percentile

45%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.53% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (openwall.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (lists.gnu.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat197 products
  • hivex< 0:1.3.18-20.module+el8.3.0+6423+e4cb6418 | < 0:1.3.18-20.module+el8.2.0+5588+63a201c3
  • hivex-debuginfo< 0:1.3.18-20.module+el8.3.0+6423+e4cb6418 | < 0:1.3.18-20.module+el8.2.0+5588+63a201c3
  • hivex-debugsource< 0:1.3.18-20.module+el8.3.0+6423+e4cb6418 | < 0:1.3.18-20.module+el8.2.0+5588+63a201c3
  • hivex-devel< 0:1.3.18-20.module+el8.3.0+6423+e4cb6418 | < 0:1.3.18-20.module+el8.2.0+5588+63a201c3
  • libguestfs< 1:1.40.2-25.module+el8.3.0+7421+642fe24f | < 1:1.40.2-24.module+el8.2.1+7154+47ffd890
Alpine1 product
  • qemu≥ 5.0.0, < 5.2.0-r0
Debian1 product
  • qemu< 1:5.2+dfsg-5
Qemu1 product
  • qemu≥ 5.0.0, ≤ 5.2.50

4 vendors · 200 products · Showing 200 of 218

References

17 links
Show all 17 references