medium 5.3

CVE-2025-11277 json

Open Asset Import Library Assimp Q3DLoader.cpp InternReadFile heap-based overflow

published 2025-10-05 13 mo ago modified 2026-10-11 28 d ago also PYSEC-2025-157 , EUVD-2025-32253

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

A weakness has been identified in Open Asset Import Library Assimp 6.0.2. This affects the function Q3DImporter::InternReadFile of the file assimp/code/AssetLib/Q3D/Q3DLoader.cpp. Executing a manipulation can lead to heap-based buffer overflow. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks.

Patch / fix

distros 6

debian red hat opensuse almalinux rocky linux alpine

assimp Debian 14 6.0.3+ds-1

debian advisories DEBIAN-CVE-2025-11277

qt6-qtquick3d RHEL 10.1 6.9.1-1.el10_1.1
qt6-qtquick3d-examples RHEL 10.1 6.9.1-1.el10_1.1
qt5-qt3d RHEL 9 5.15.9-2.el9_7.1
qt5-qt3d-examples RHEL 9 5.15.9-2.el9_7.1
qt5-qt3d RHEL 9 5.15.9-2.el9_6.1
qt5-qt3d-examples RHEL 9 5.15.9-2.el9_6.1
qt6-qtquick3d enterprise linux eus 10.0 6.8.1-2.el10_0.1
qt6-qtquick3d-examples enterprise linux eus 10.0 6.8.1-2.el10_0.1

red hat advisories RHSA-2025:22663 RHSA-2025:22549 RHSA-2025:22413 RHSA-2025:22414 RHSA-2025:22361 RHSA-2025:20963

assimp openSUSE Leap 16.0 5.4.3-160000.4.1
assimp openSUSE Tumbleweed 6.0.5-3.1

opensuse advisories openSUSE-SU-2026:21242-1 openSUSE-SU-2026:10946-1

qt6-qtquick3d AlmaLinux 10 6.9.1-1.el10_1.1
qt6-qtquick3d-examples AlmaLinux 10 6.9.1-1.el10_1.1
qt5-qt3d AlmaLinux 9 5.15.9-2.el9_7.1
qt5-qt3d-examples AlmaLinux 9 5.15.9-2.el9_7.1

almalinux advisories ALSA-2025:22361 ALSA-2025:20963

qt6-qtquick3d Rocky Linux 10 6.9.1-1.el10_1.1
qt5-qt3d Rocky Linux 9 5.15.9-2.el9_7.1

rocky linux advisories RLSA-2025:22361 RLSA-2025:19911 RLSA-2025:20963

assimp Alpine 3.24, Alpine 3.23 6.0.4-r0

alpine advisories ALPINE-CVE-2025-11277

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-11277 updated 2026-07-11 cvss 6.1

assimp: Open Asset Import Library Assimp Q3DLoader.cpp InternReadFile heap-based overflow

Red Hat Enterprise Linux AppStream (v. 9) qt5-qt3d 5.15.9-2.el9_6.1, qt5-qt3d 5.15.9-2.el9_7.1, qt5-qt3d-examples 5.15.9-2.el9_6.1, qt5-qt3d-examples 5.15.9-2.el9_7.1
fixed: vendor fix RHSA-2025:19911
Red Hat Enterprise Linux AppStream (v. 10) qt6-qtquick3d 6.9.1-1.el10_1.1
fixed: vendor fix RHSA-2025:22361
Red Hat Enterprise Linux AppStream E4S (v.9.0) qt5-qt3d 5.15.2-10.el9_0.1, qt5-qt3d-examples 5.15.2-10.el9_0.1
fixed: vendor fix RHSA-2025:22414
Red Hat Enterprise Linux AppStream E4S (v.9.2) qt5-qt3d 5.15.3-2.el9_2.1, qt5-qt3d-examples 5.15.3-2.el9_2.1
fixed: vendor fix RHSA-2025:22413
Red Hat Enterprise Linux AppStream EUS (v. 10.0) qt6-qtquick3d 6.8.1-2.el10_0.1
fixed: vendor fix RHSA-2025:22663
Red Hat Enterprise Linux AppStream EUS (v.9.4) qt5-qt3d 5.15.9-2.el9_4.1, qt5-qt3d-examples 5.15.9-2.el9_4.1
fixed: vendor fix RHSA-2025:22549
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) qt6-qtquick3d-examples 6.9.1-1.el10_1.1
fixed: vendor fix RHSA-2025:22361
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) qt6-qtquick3d-examples 6.8.1-2.el10_0.1
fixed: vendor fix RHSA-2025:22663

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 13 mo ago (2025-10-06)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/user-attachments/files/22422643/poc.zip referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/assimp/assimp/issues/6358 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	4.8	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CNA	3.1	5.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CNA	3.0	5.3	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CNA	2.0	4.3	AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
CNA	4.0	1.9	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
CNA	3.1	5.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	2.0	4.3	AV:L/AC:L/Au:S/C:P/I:P/A:P
OSV	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
pypi	pyassimp	<=6.0.2	no fix listed

Affected products

Open Asset Import Library Assimp

Classification

Weakness

CWE-122 Heap-based Buffer Overflow
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com /user-attachments/files/22422643/poc.zip
exploit, evidence
github.com /assimp/assimp/issues/6358
issue-tracking, exploit, report
vuldb.com /?id.327011
vdb-entry, technical-description, third-party-advisory, advisory
vuldb.com /?ctiid.327011
signature, permissions-required, vdb-entry, report
vuldb.com /?submit.658912
third-party-advisory, vdb-entry, advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary