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Fencer Vulns
low 3.5

CVE-2022-39282 json

RDP client: Read of uninitialized memory with parallel port redirection

published 2022-10-12 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-41784

cvss
3.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

FreeRDP is a free remote desktop protocol library and clients. FreeRDP based clients on unix systems using `/parallel` command line switch might read uninitialized data and send it to the server the client is currently connected to. FreeRDP based server implementations are not affected. Please upgrade to 2.8.1 where this issue is patched. If unable to upgrade, do not use parallel port redirection (`/parallel` command line switch) as a workaround.

Patch / fix

  • freerdp freerdp 2.8.1
  • freerdp2 Debian 12 2.8.1+dfsg1-1

debian advisories DEBIAN-CVE-2022-39282

  • freerdp2 Ubuntu 18.04 LTS 2.2.0+dfsg1-0ubuntu0.18.04.4
  • freerdp2 Ubuntu 20.04 LTS 2.2.0+dfsg1-0ubuntu0.20.04.4
  • freerdp2 Ubuntu 22.04 LTS 2.6.1+dfsg1-3ubuntu2.3

ubuntu advisories UBUNTU-CVE-2022-39282

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • freerdp RHEL 8 2:2.2.0-10.el8
  • libwinpr RHEL 8 2:2.2.0-10.el8
  • freerdp-libs RHEL 8 2:2.2.0-10.el8
  • freerdp RHEL 9 2:2.4.1-5.el9
  • libwinpr RHEL 9 2:2.4.1-5.el9
  • freerdp-libs RHEL 9 2:2.4.1-5.el9

red hat advisories RHSA-2023:2851RHSA-2023:2326

  • freerdp SLE Workstation Extension 12 SP5, SLE Software Development Kit 12 SP5 2.1.2-12.29.1
  • freerdp SLE Workstation Extension 15 SP4, SLE Module for Package Hub 15 SP4, openSUSE Leap 15.4 2.4.0-150400.3.9.1
  • freerdp SLE Workstation Extension 15 SP3, SLE Module for Package Hub 15 SP3, openSUSE Leap 15.3 2.1.2-150200.15.21.1

suse advisories SUSE-SU-2022:3984-1SUSE-SU-2022:3983-1SUSE-SU-2022:3982-1

  • freerdp2 openSUSE Tumbleweed 2.8.1-1.1

opensuse advisories openSUSE-SU-2024:12515-1

  • freerdp AlmaLinux 8 2:2.2.0-10.el8
  • libwinpr AlmaLinux 8 2:2.2.0-10.el8
  • freerdp-libs AlmaLinux 8 2:2.2.0-10.el8
  • freerdp AlmaLinux 9 2:2.4.1-5.el9
  • libwinpr AlmaLinux 9 2:2.4.1-5.el9
  • freerdp-libs AlmaLinux 9 2:2.4.1-5.el9

almalinux advisories ALSA-2023:2851ALSA-2023:2326

  • freerdp Rocky Linux 8 2:2.2.0-10.el8

rocky linux advisories RLSA-2023:2851

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-39282 updated cvss 7.5

freerdp: clients using `/parallel` command line switch might read uninitialized data

  • Red Hat Enterprise Linux 6 freerdp, freerdp-libs, freerdp-plugins Red Hat Enterprise Linux 7 freerdp, libwinpr, freerdp-libs, freerdp-plugins
    affected: workaround, no fix planned “Workaround: Do not use parallel port redirection (/parallel command line switch)”
  • Red Hat Enterprise Linux AppStream (v. 8) freerdp 2.2.0-10.el8, libwinpr 2.2.0-10.el8, freerdp-libs 2.2.0-10.el8
    fixed: vendor fix “Workaround: Do not use parallel port redirection (/parallel command line switch)” RHSA-2023:2851
  • Red Hat Enterprise Linux AppStream (v. 9) freerdp 2.4.1-5.el9, libwinpr 2.4.1-5.el9, freerdp-libs 2.4.1-5.el9
    fixed: vendor fix “Workaround: Do not use parallel port redirection (/parallel command line switch)” RHSA-2023:2326
  • Red Hat Enterprise Linux CRB (v. 8) freerdp-devel 2.2.0-10.el8, freerdp-debuginfo 2.2.0-10.el8, libwinpr-debuginfo 2.2.0-10.el8, freerdp-debugsource 2.2.0-10.el8, freerdp-libs-debuginfo 2.2.0-10.el8
    fixed: vendor fix “Workaround: Do not use parallel port redirection (/parallel command line switch)” RHSA-2023:2851
  • Red Hat Enterprise Linux CRB (v. 9) freerdp-devel 2.4.1-5.el9, libwinpr-devel 2.4.1-5.el9, freerdp-debuginfo 2.4.1-5.el9, libwinpr-debuginfo 2.4.1-5.el9, freerdp-debugsource 2.4.1-5.el9, freerdp-libs-debuginfo 2.4.1-5.el9
    fixed: vendor fix “Workaround: Do not use parallel port redirection (/parallel command line switch)” RHSA-2023:2326

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

1.10% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

  • FreeRDP FreeRDP

Classification

Weakness
  • CWE-908 Use of Uninitialized Resource

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.