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01 Record

CVE-2026-33987

FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write

HighPUBLISHEDCNA: GitHub_M
CNA base score7.1 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
View raw JSON

02 Description

FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.10% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 1.0% of scored records. A rank, not a probability.
NVD base score
6.6 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-03-30 21:43Z7 MO AGO
Last updated
2026-03-31 15:32Z7 MO AGO
Reserved
2026-03-24
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 7.1)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Weaknesses
  • CWE-122Heap-based Buffer OverflowVariant
  • CWE-131Incorrect Calculation of Buffer SizeBase
Data version
5.2
Document digest
7cfdcf399d25198400fbb173b0bb9258ad322bcf39304cf999e6c0d54f1d7c74

05 Affected products

VendorProductVersionsPlatforms
FreeRDPFreeRDP< 3.24.2—

06 References

07 Fixed in

AlmaLinux 10

  • freerdp
    Fixed in 2:3.10.3-5.el10_1.8
  • freerdp-devel
    Fixed in 2:3.10.3-5.el10_1.8
  • freerdp-libs
    Fixed in 2:3.10.3-5.el10_1.8
  • freerdp-server
    Fixed in 2:3.10.3-5.el10_1.8
  • libwinpr
    Fixed in 2:3.10.3-5.el10_1.8
  • libwinpr-devel
    Fixed in 2:3.10.3-5.el10_1.8

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • freerdp
    Fixed in 2:3.10.3-5.el10_1.8
  • freerdp-devel
    Fixed in 2:3.10.3-5.el10_1.8
  • freerdp-libs
    Fixed in 2:3.10.3-5.el10_1.8
  • freerdp-server
    Fixed in 2:3.10.3-5.el10_1.8
  • libwinpr
    Fixed in 2:3.10.3-5.el10_1.8
  • libwinpr-devel
    Fixed in 2:3.10.3-5.el10_1.8

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • freerdp2
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • freerdp3
    Fixed in 3.15.0+dfsg-2.1+deb13u2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • freerdp3
    Fixed in 3.24.2+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • freerdp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • freerdp
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • freerdp2
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • freerdp3
    Fixed in 3.30.0+dfsg-0ubuntu0.24.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • freerdp3
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • freerdp2
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • freerdp2
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 24.04 LTS

  • freerdp2
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.