synced 7 MIN AGO
01 Record

CVE-2025-5455

Possible denial of service when passing malformed data in a URL to qDecodeDataUrl

HighPUBLISHEDCNA: TQtC
CNA base score8.4 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H/R:U/RE:M/U:Clear
View raw JSON

02 Description

Possible denial of service when passing malformed data in a URL to qDecodeDataUrl

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.
  • 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
0.38% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 32.1% of scored records. A rank, not a probability.
NVD base score
8.4 (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:A/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H/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:U/V:X/RE:M/U:Clear
NVD analysis status
Deferred. NVD last modified this record on 2026-07-29.
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
2025-06-02 08:46Z1 YR AGO
Last updated
2026-07-29 07:34Z3 MO AGO
Reserved
2025-06-02
Assigning CNA
TQtC
Record state
PUBLISHED
Severity
High (CVSS 8.4)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H/R:U/RE:M/U:Clear
Weaknesses
  • CWE-20Improper Input ValidationClass
  • CWE-617Reachable AssertionBase
Data version
5.2
Document digest
7547fe43678f963131b9f40eb3c556aac114ccb4f6e9ecfc55e749b883f23006

05 Affected products

VendorProductVersionsPlatforms
QtQt0 to 5.15.18, 6.0.0 to 6.5.8, 6.6.0 to 6.8.3, 6.9.0—

06 References

07 Fixed in

AlmaLinux 9

  • qt5-qtbase
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-common
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-devel
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-examples
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-gui
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-mysql
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-odbc
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-postgresql
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-private-devel
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-static
    Fixed in 5.15.9-11.el9_6

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

AlmaLinux 10

  • qt6-qtbase-common
    Fixed in 6.8.1-9.el10_0

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

CloudLinux 9

  • qt5-qtbase
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-common
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-devel
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-examples
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-gui
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-mysql
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-odbc
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-postgresql
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-private-devel
    Fixed in 5.15.9-11.el9_6
  • qt5-qtbase-static
    Fixed in 5.15.9-11.el9_6

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

  • qt6-qtbase-common
    Fixed in 6.8.1-9.el10_0

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

  • qt6-base
    No fix yet
  • qtbase-opensource-src
    No fix yet

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

Debian 13

  • qt6-base
    Fixed in 6.8.2+dfsg-8
  • qtbase-opensource-src
    Fixed in 5.15.15+dfsg-6

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

Debian 14

  • qt6-base
    Fixed in 6.8.2+dfsg-8
  • qtbase-opensource-src
    Fixed in 5.15.15+dfsg-6

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

Ubuntu 16.04 LTS

  • qtbase-opensource-src-gles
    No fix yet

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

Ubuntu 20.04 LTS

  • qtbase-opensource-src-gles
    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

  • qt6-base
    No fix yet
  • qtbase-opensource-src
    No fix yet
  • qtbase-opensource-src-gles
    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

  • qt6-base
    No fix yet
  • qtbase-opensource-src
    No fix yet
  • qtbase-opensource-src-gles
    No fix yet

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

Ubuntu 25.10

  • qt6-base
    No fix yet
  • qtbase-opensource-src-gles
    No fix yet

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

Ubuntu 26.04 LTS

  • qt6-base
    No fix yet
  • qtbase-opensource-src-gles
    No fix yet

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

Ubuntu 26.10

  • qt6-base
    No fix yet
  • qtbase-opensource-src-gles
    No fix yet

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

Ubuntu Pro 16.04 LTS

  • qtbase-opensource-src
    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

  • qtbase-opensource-src
    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

  • qtbase-opensource-src
    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.