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TI-2020-09243 Aliases CVE-2020-11524

libfreerdp/codec/interleaved.c in FreeRDP versions > 1.0 through 2.0.0-rc4 has an Out-of-bounds Write.

Priority LOW 33CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 11 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

libfreerdp/codec/interleaved.c in FreeRDP versions > 1.0 through 2.0.0-rc4 has an Out-of-bounds Write.

Why it matters now

EPSS 0.01838 79th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 4 advisoriesRed Hat: 11 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 11

CPEVersionsRoleVendor
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*after 1.0.0, before 2.0.0VulnerableFreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:-:*:*:*:*:*:*2.0.0VulnerableFreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:rc0:*:*:*:*:*:*2.0.0 rc0VulnerableFreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:rc1:*:*:*:*:*:*2.0.0 rc1VulnerableFreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:rc2:*:*:*:*:*:*2.0.0 rc2VulnerableFreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:rc3:*:*:*:*:*:*2.0.0 rc3VulnerableFreeRDP
cpe:2.3:a:freerdp:freerdp:2.0.0:rc4:*:*:*:*:*:*2.0.0 rc4VulnerableFreeRDP
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*19.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*20.04VulnerableCanonical
  • cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:* Versions after 1.0.0, before 2.0.0 Vulnerable ·FreeRDP
  • cpe:2.3:a:freerdp:freerdp:2.0.0:-:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·FreeRDP
  • cpe:2.3:a:freerdp:freerdp:2.0.0:rc0:*:*:*:*:*:* Versions 2.0.0 rc0 Vulnerable ·FreeRDP
  • cpe:2.3:a:freerdp:freerdp:2.0.0:rc1:*:*:*:*:*:* Versions 2.0.0 rc1 Vulnerable ·FreeRDP
  • cpe:2.3:a:freerdp:freerdp:2.0.0:rc2:*:*:*:*:*:* Versions 2.0.0 rc2 Vulnerable ·FreeRDP
  • cpe:2.3:a:freerdp:freerdp:2.0.0:rc3:*:*:*:*:*:* Versions 2.0.0 rc3 Vulnerable ·FreeRDP
  • cpe:2.3:a:freerdp:freerdp:2.0.0:rc4:*:*:*:*:*:* Versions 2.0.0 rc4 Vulnerable ·FreeRDP
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* Versions 19.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* Versions 20.04 Vulnerable ·Canonical
Show 1 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*15.1VulnerableopenSUSE
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE

Remediation

Red Hat 4 advisories

  • RHSA-2020:2354 Released 2020-06-02 · Red Hat rating Important
    freerdp security update
    • Red Hat CodeReady Linux Builder EUS (v. 8.1) freerdp-devel-2:2.0.0-46.rc4.el8_1.1
    • Red Hat Enterprise Linux AppStream EUS (v. 8.1) freerdp-2:2.0.0-46.rc4.el8_1.1, freerdp-libs-2:2.0.0-46.rc4.el8_1.1, libwinpr-2:2.0.0-46.rc4.el8_1.1 +1
  • RHSA-2020:2336 Released 2020-05-28 · Red Hat rating Important
    freerdp security update
    • Red Hat CodeReady Linux Builder (v. 8) freerdp-devel-2:2.0.0-46.rc4.el8_2.1
    • Red Hat Enterprise Linux AppStream (v. 8) freerdp-2:2.0.0-46.rc4.el8_2.1, freerdp-libs-2:2.0.0-46.rc4.el8_2.1, libwinpr-2:2.0.0-46.rc4.el8_2.1 +1
  • RHSA-2020:2335 Released 2020-05-28 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.0) freerdp-2:2.0.0-46.rc4.el8_0.1, freerdp-libs-2:2.0.0-46.rc4.el8_0.1, libwinpr-2:2.0.0-46.rc4.el8_0.1 +1
Show 1 more Red Hat advisories
  • RHSA-2020:2334 Released 2020-05-28 · Red Hat rating Important
    freerdp security update
    • Red Hat Enterprise Linux Client (v. 7) freerdp-2.0.0-4.rc4.el7_8, freerdp-libs-2.0.0-4.rc4.el7_8, libwinpr-2.0.0-4.rc4.el7_8
    • Red Hat Enterprise Linux Client Optional (v. 7) freerdp-devel-2.0.0-4.rc4.el7_8, libwinpr-devel-2.0.0-4.rc4.el7_8
    • Red Hat Enterprise Linux Server (v. 7) freerdp-2.0.0-4.rc4.el7_8, freerdp-libs-2.0.0-4.rc4.el7_8, freerdp-libs-2.0.0-4.rc4.el7_8.ppc +2
    • Red Hat Enterprise Linux Server Optional (v. 7) freerdp-devel-2.0.0-4.rc4.el7_8, freerdp-devel-2.0.0-4.rc4.el7_8.ppc, libwinpr-devel-2.0.0-4.rc4.el7_8 +1
    • Red Hat Enterprise Linux Workstation (v. 7) freerdp-2.0.0-4.rc4.el7_8, freerdp-libs-2.0.0-4.rc4.el7_8, libwinpr-2.0.0-4.rc4.el7_8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) freerdp-devel-2.0.0-4.rc4.el7_8, libwinpr-devel-2.0.0-4.rc4.el7_8

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2020:2336
Red Hat CodeReady Linux Builder EUS (v. 8.1)Fixed RHSA-2020:2354
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2020:2336
Red Hat Enterprise Linux AppStream E4S (v. 8.0)Fixed RHSA-2020:2335
Red Hat Enterprise Linux AppStream EUS (v. 8.1)Fixed RHSA-2020:2354
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:2334
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:2334
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:2334
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:2334
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:2334
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:2334

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-11524

References

Exploit 1

Patch 2

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences