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TI-2022-18658 Aliases CVE-2022-39282

RDP client: Read of uninitialized memory with parallel port redirection

Priority LOW 35CWE-908Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 4 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-908 and the CVSS impact.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01102 65th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 4 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FreeRDPFreeRDPup to 2.8.0—No fix listedCNA
  • FreeRDP VendorFreeRDP Affected up to 2.8.0 Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*before 2.8.1VulnerableFreeRDP
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*35VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*36VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*37VulnerableFedoraproject
  • cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:* Versions before 2.8.1 Vulnerable ·FreeRDP
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* Versions 36 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject

Remediation

Red Hat 2 advisories

  • RHSA-2023:2851 Released 2023-05-16 · Red Hat rating Moderate
    freerdp security update
    • Red Hat Enterprise Linux AppStream (v. 8) freerdp-2:2.2.0-10.el8, freerdp-libs-2:2.2.0-10.el8, libwinpr-2:2.2.0-10.el8 +1
    • Red Hat Enterprise Linux CRB (v. 8) freerdp-devel-2:2.2.0-10.el8
  • RHSA-2023:2326 Released 2023-05-09 · Red Hat rating Moderate
    freerdp security update
    • Red Hat Enterprise Linux AppStream (v. 9) freerdp-2:2.4.1-5.el9, freerdp-libs-2:2.4.1-5.el9, libwinpr-2:2.4.1-5.el9
    • Red Hat Enterprise Linux CRB (v. 9) freerdp-devel-2:2.4.1-5.el9, libwinpr-devel-2:2.4.1-5.el9

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    FreeRDP — FEDORA-2022-e733724edb

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2022-18659 FreeRDP may read and display out of bounds dataPriority LOW 36
    Show all 2 records → Advisory →
  • Advisory ·

    FreeRDP — FEDORA-2022-d6310a1308

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2022-18659 FreeRDP may read and display out of bounds dataPriority LOW 36
    Show all 2 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2023:2851
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:2326
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2023:2851
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2023:2326

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-39282

References

Advisory 5

Other 2

  • TI-2026-85092 Use-after-free in FreeRDP rdpgfx channel close handling CVSS 4.0CRITICAL 9.3
  • TI-2026-85091 Out-of-bounds write in FreeRDP proxy via bitmap cache v2 capability CVSS 4.0CRITICAL 9.3
  • TI-2026-24435 FreeRDP has a `size_t` underflow in ADPCM decoder leads to heap-buffer-overflow write CVSS 3.1CRITICAL 9.8
  • TI-2023-21373 Out-Of-Bounds Write in FreeRDP CVSS 3.1CRITICAL 9.8
  • TI-2022-08692 Server side NTLM does not properly check parameters in FreeRDP CVSS 3.1CRITICAL 9.1
  • TI-2023-21374 Out-Of-Bounds Read in FreeRDP CVSS 3.1CRITICAL 9.1
See all 336 →

Sources

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