CVE-2024-39936

EUVD-2024-38310
An issue was discovered in HTTP2 in Qt before 5.15.18, 6.x before 6.2.13, 6.3.x through 6.5.x before 6.5.7, and 6.6.x through 6.7.x before 6.7.3. Code to make security-relevant decisions about an established connection may execute too early, because the encrypted() signal has not yet been emitted and processed..
TOCTOU
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
mitreCNA
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AC:L/AV:N/A:N/C:H/I:N/PR:N/S:C/UI:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 42%
Affected Products (NVD)
VendorProductVersion
qtqt
𝑥
< 5.15.18
qtqt
6.0.0 ≤
𝑥
< 6.2.13
qtqt
6.3.0 ≤
𝑥
< 6.5.7
qtqt
6.6.0 ≤
𝑥
< 6.7.3
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
qt6-base
bookworm
no-dsa
forky
6.9.2+dfsg-3
fixed
sid
6.9.2+dfsg-3
fixed
trixie
6.8.2+dfsg-9+deb13u1
fixed
qtbase-opensource-src
bookworm
5.15.8+dfsg-11+deb12u3
no-dsa
bullseye
vulnerable
bullseye (security)
5.15.2+dfsg-9+deb11u2
fixed
forky
5.15.17+dfsg-5
fixed
sid
5.15.17+dfsg-6
fixed
trixie
5.15.15+dfsg-6
fixed
qtbase-opensource-src-gles
bookworm
no-dsa
bullseye
unimportant
forky
unimportant
sid
unimportant
trixie
unimportant
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
qtbase-opensource-src
bionic
not-affected
focal
ignored
jammy
needed
mantic
ignored
noble
ignored
oracular
ignored
plucky
not-affected
questing
not-affected
xenial
not-affected
Common Weakness Enumeration
References
https://codereview.qt-project.org/c/qt/qtbase/+/571601
https://codereview.qt-project.org/c/qt/qtbase/+/571601
https://lists.debian.org/debian-lts-announce/2025/11/msg00031.html