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01 Record

CVE-2026-91964

FreeRDP 2.0.0 through 3.30.0 Heap Buffer Overflow via RoutingToken

HighPUBLISHEDCNA: VulnCheck
CNA base score8.7 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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02 Description

FreeRDP 2.0.0 through 3.30.0 Heap Buffer Overflow via RoutingToken

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 ImpacttotalSuccessful exploitation gives total 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
0.56% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 46.6% of scored records. A rank, not a probability.
NVD base score
8.7 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-09-24.
Red Hat severity
Important. 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
2026-09-15 15:18Z1 MO AGO
Last updated
2026-09-16 15:51Z1 MO AGO
Reserved
2026-09-15
Assigning CNA
VulnCheck
Record state
PUBLISHED
Severity
High (CVSS 8.7)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weaknesses
  • CWE-122Heap-based Buffer OverflowVariant
  • CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
Data version
5.2
Document digest
d3756adbfaab8734adba10c4a7dc22b40570a5744c6c335036b2b4f5d4b85010

05 Affected products

VendorProductVersionsPlatforms
FreeRDPFreeRDP2.0.0 to < 3.0.0, 3.0.0 to < 3.31.0, 0 to < 3.31.0—

06 References

07 Fixed in

AlmaLinux 8

  • freerdp
    Fixed in 2:2.11.7-14.el8_10
  • freerdp-devel
    Fixed in 2:2.11.7-14.el8_10
  • freerdp-libs
    Fixed in 2:2.11.7-14.el8_10
  • libwinpr
    Fixed in 2:2.11.7-14.el8_10
  • libwinpr-devel
    Fixed in 2:2.11.7-14.el8_10

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

AlmaLinux 9

  • freerdp
    Fixed in 2:2.11.7-7.el9_8.8
  • freerdp-devel
    Fixed in 2:2.11.7-7.el9_8.8
  • freerdp-libs
    Fixed in 2:2.11.7-7.el9_8.8
  • libwinpr
    Fixed in 2:2.11.7-7.el9_8.8
  • libwinpr-devel
    Fixed in 2:2.11.7-7.el9_8.8

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

AlmaLinux 10

  • freerdp
    Fixed in 2:3.10.3-12.el10_2.14
  • freerdp-devel
    Fixed in 2:3.10.3-12.el10_2.14
  • freerdp-libs
    Fixed in 2:3.10.3-12.el10_2.14
  • freerdp-server
    Fixed in 2:3.10.3-12.el10_2.14
  • libwinpr
    Fixed in 2:3.10.3-12.el10_2.14
  • libwinpr-devel
    Fixed in 2:3.10.3-12.el10_2.14

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

CloudLinux 8

  • freerdp
    Fixed in 2:2.11.7-14.el8_10
  • freerdp-devel
    Fixed in 2:2.11.7-14.el8_10
  • freerdp-libs
    Fixed in 2:2.11.7-14.el8_10
  • libwinpr
    Fixed in 2:2.11.7-14.el8_10
  • libwinpr-devel
    Fixed in 2:2.11.7-14.el8_10

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 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.

CloudLinux 9

  • freerdp
    Fixed in 2:2.11.7-7.el9_8.8
  • freerdp-devel
    Fixed in 2:2.11.7-7.el9_8.8
  • freerdp-libs
    Fixed in 2:2.11.7-7.el9_8.8
  • libwinpr
    Fixed in 2:2.11.7-7.el9_8.8
  • libwinpr-devel
    Fixed in 2:2.11.7-7.el9_8.8

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 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.

CloudLinux 10

  • freerdp
    Fixed in 2:3.10.3-12.el10_2.14
  • freerdp-devel
    Fixed in 2:3.10.3-12.el10_2.14
  • freerdp-libs
    Fixed in 2:3.10.3-12.el10_2.14
  • freerdp-server
    Fixed in 2:3.10.3-12.el10_2.14
  • libwinpr
    Fixed in 2:3.10.3-12.el10_2.14
  • libwinpr-devel
    Fixed in 2:3.10.3-12.el10_2.14

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
    No fix yet

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

Debian 14

  • freerdp3
    Fixed in 3.31.0+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 3.31.0+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 26.04 LTS

  • freerdp3
    Fixed in 3.31.0+dfsg-0ubuntu0.26.04.1

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.