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Fencer Vulns
low 3.5

CVE-2020-4030 json

OOB read in `TrioParse` in FreeRDP

published 2020-06-22 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-25295

cvss
3.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

In FreeRDP before version 2.1.2, there is an out of bounds read in TrioParse. Logging might bypass string length checks due to an integer overflow. This is fixed in version 2.1.2.

Patch / fix

  • freerdp freerdp 2.1.2
  • freerdp2 Debian 12 2.1.2+dfsg1-1

debian advisories DEBIAN-CVE-2020-4030

  • freerdp2 Ubuntu 18.04 LTS 2.2.0+dfsg1-0ubuntu0.18.04.1
  • freerdp2 Ubuntu 20.04 LTS 2.2.0+dfsg1-0ubuntu0.20.04.1

ubuntu advisories UBUNTU-CVE-2020-4030

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 2:2.2.0-1.el8
  • libwinpr RHEL 8 2:2.2.0-1.el8
  • freerdp-libs RHEL 8 2:2.2.0-1.el8

red hat advisories RHSA-2021:1849

  • freerdp SLE Workstation Extension 12 SP5, SLE Software Development Kit 12 SP5 2.1.2-12.20.1
  • vinagre SLE Workstation Extension 12 SP5 3.20.2-16.3.3
  • freerdp SLE Workstation Extension 15 SP2 2.1.2-15.7.1
  • freerdp SLE Workstation Extension 15 SP1 2.1.2-10.15.1

suse advisories SUSE-SU-2020:2272-1SUSE-SU-2020:2068-1SUSE-SU-2020:2032-1

  • freerdp2 openSUSE Tumbleweed 2.4.0-2.1
  • freerdp openSUSE Leap 15.1 2.1.2-lp151.5.6.1

opensuse advisories openSUSE-SU-2024:10768-1openSUSE-SU-2020:1090-1

  • freerdp Rocky Linux 8 2:2.2.0-1.el8
  • freerdp Rocky Linux 8 2:2.2.0-10.el8

rocky linux advisories RLSA-2021:1849

  • freerdp Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 2.1.2-r0
  • freerdp2 Alpine 3.24, Alpine 3.23, Alpine 3.22 2.1.2-r0

alpine advisories ALPINE-CVE-2020-4030

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • freerdp Arch Linux 2:2.1.2-1

arch linux advisories AVG-1193

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-2020-4030 updated cvss 6.5

freerdp: out of bounds read in TrioParse

  • Red Hat Enterprise Linux 7 freerdp, libwinpr, freerdp-libs, freerdp-plugins
    affected: no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder (v. 8) freerdp-devel 2.2.0-1.el8, freerdp-debuginfo 2.2.0-1.el8, libwinpr-debuginfo 2.2.0-1.el8, freerdp-debugsource 2.2.0-1.el8, freerdp-libs-debuginfo 2.2.0-1.el8 Red Hat Enterprise Linux AppStream (v. 8) freerdp 2.2.0-1.el8, libwinpr 2.2.0-1.el8, freerdp-libs 2.2.0-1.el8
    fixed: vendor fix RHSA-2021:1849
  • Red Hat Enterprise Linux 6 freerdp, freerdp-libs, freerdp-plugins
    not affected: vulnerable code not present

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

Exploit prediction

1.70% chance of exploitation in the next 30 days, higher than 77% 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:H/PR:L/UI:N/S:C/C:N/I:L/A:N
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:N/A:P

Affected products

  • FreeRDP FreeRDP

Classification

Weakness

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.