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01 Record

CVE-2026-27951

FreeRDP has possible Integer overflow in Stream_EnsureCapacity

MediumPUBLISHEDCNA: GitHub_M
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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02 Description

FreeRDP has possible Integer overflow in Stream_EnsureCapacity

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • 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
0.40% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 34.4% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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
2026-02-25 21:07Z8 MO AGO
Last updated
2026-02-25 21:43Z8 MO AGO
Reserved
2026-02-25
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
  • CWE-190Integer Overflow or WraparoundBase
Data version
5.2
Document digest
161d0b7a09a95d22f4d419ace7c41d89dec210ef35c30942b8a2628ac24c7131

05 Affected products

VendorProductVersionsPlatforms
FreeRDPFreeRDP< 3.23.0—

06 References

07 Fixed in

AlmaLinux 8

  • freerdp
    Fixed in 2:2.11.7-9.el8_10
  • freerdp-devel
    Fixed in 2:2.11.7-9.el8_10
  • freerdp-libs
    Fixed in 2:2.11.7-9.el8_10
  • libwinpr
    Fixed in 2:2.11.7-9.el8_10
  • libwinpr-devel
    Fixed in 2:2.11.7-9.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

    A version is affected if any line below covers it.

    • Affected before 2:2.11.7-1.el9_7.7
    • Affected before 2:2.11.7-7.el9_8.3
  • freerdp-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.11.7-1.el9_7.7
    • Affected before 2:2.11.7-7.el9_8.3
  • freerdp-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.11.7-1.el9_7.7
    • Affected before 2:2.11.7-7.el9_8.3
  • libwinpr
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.11.7-1.el9_7.7
    • Affected before 2:2.11.7-7.el9_8.3
  • libwinpr-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.11.7-1.el9_7.7
    • Affected before 2:2.11.7-7.el9_8.3

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 2:2.11.7-9.el8_10
  • freerdp-devel
    Fixed in 2:2.11.7-9.el8_10
  • freerdp-libs
    Fixed in 2:2.11.7-9.el8_10
  • libwinpr
    Fixed in 2:2.11.7-9.el8_10
  • libwinpr-devel
    Fixed in 2:2.11.7-9.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

    A version is affected if any line below covers it.

    • Affected before 2:2.11.7-1.el9_7.7
    • Affected before 2:2.11.7-7.el9_8.3
  • freerdp-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.11.7-1.el9_7.7
    • Affected before 2:2.11.7-7.el9_8.3
  • freerdp-libs
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.11.7-1.el9_7.7
    • Affected before 2:2.11.7-7.el9_8.3
  • libwinpr
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.11.7-1.el9_7.7
    • Affected before 2:2.11.7-7.el9_8.3
  • libwinpr-devel
    Fixed

    A version is affected if any line below covers it.

    • Affected before 2:2.11.7-1.el9_7.7
    • Affected before 2:2.11.7-7.el9_8.3

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.

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 3.23.0+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 3.30.0+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.