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TI-2026-84268 Aliases CVE-2026-121386GHSA-qrqm-xr33-jxpf

Denial of service in FreeRDP WinPR PNG and JPEG image readers

Priority HIGH 77CWE-248Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-248.

Summary

FreeRDP before 3.32.2 contains a denial of service flaw in WinPR's PNG and JPEG image readers, which lack error handling from libpng and libjpeg (CWE-248). A malicious RDP server or man-in-the-middle attacker can send a malformed PNG or truncated JPEG clipboard payload, which makes the client abort or exit.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

FreeRDP before 3.32.2 contains a denial of service vulnerability in WinPR's winpr_read_png_from_buffer() and winpr_convert_from_jpeg(), which lack libpng/libjpeg error handling. A malicious RDP server or MITM can offer a malformed PNG or truncated JPEG clipboard payload, causing the client to abort or exit.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00267 18th percentileScored 2026-11-07
Fix Partial FreeRDP (FreeRDP): 3.32.2Red Hat: 1 advisoryRed Hat: 2 fixed, 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
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
FreeRDPFreeRDPbefore 3.32.23.32.2Patch availableCNA
  • FreeRDP VendorFreeRDP Affected before 3.32.2 Fixed in 3.32.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*before 3.32.2VulnerableFreeRDP
  • cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:* Versions before 3.32.2 Vulnerable ·FreeRDP

Remediation

Update FreeRDP to 3.32.2, which fixes this flaw. Red Hat ships the fix in RHSA-2026:94514 for Red Hat Enterprise Linux AppStream 10 and CodeReady Linux Builder 10. Red Hat states no fix is planned for Red Hat Enterprise Linux 6 and lists no fix available for Red Hat Enterprise Linux 7, 8 and 9.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

  • Fix · CNA FreeRDP (FreeRDP) Fixed in 3.32.2

Red Hat 1 advisory

  • RHSA-2026:94514 Released 2026-11-03 · Red Hat rating Important
    freerdp security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) freerdp-2:3.32.2-1.el10_2, freerdp-libs-2:3.32.2-1.el10_2, libwinpr-2:3.32.2-1.el10_2
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) freerdp-devel-2:3.32.2-1.el10_2, freerdp-server-2:3.32.2-1.el10_2, libwinpr-devel-2:3.32.2-1.el10_2

Fixed in the same release

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

  • Release ·

    FreeRDP 3.32.2

    27 records Highest priority Priority HIGH 3 HIGH, 11 MEDIUM, 13 LOW

    Other records, highest priority first

    • TI-2026-84291 Denial of service in FreeRDP via oversized X.224 routing tokenPriority HIGH 69
    • TI-2026-84280 Use-after-free in FreeRDP dyn-channel-dump modulePriority HIGH 69
    • TI-2026-84284 Malicious RDP servers can crash FreeRDP X11 clientsPriority MEDIUM 64
    Show all 27 records →

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 Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:94514
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:94514

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-121386
  2. 2026-11-03 Alias added: GHSA-qrqm-xr33-jxpf
  3. 2026-11-04 Affected versions changed · Red Hat
  4. 2026-11-04 CVSS score added · Red Hat
  5. 2026-11-04 Fix available: RHSA-2026:94514 · Red Hat
  6. 2026-11-04 Fix available: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · Red Hat
  7. 2026-11-05 Priority changed: MEDIUM → LOW
  8. 2026-11-07 CISA SSVC decision points changed
  9. 2026-11-07 Priority changed: LOW → HIGH

References

Advisory 1

  • 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