CVE-2026-119719
Blender before 4.5.15 and 5.x before 5.2.3 Heap Buffer Overflow via Thumbnail Extraction
Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thumbnail extractor caused by 32-bit integer overflow in thumb_data_vertical_flip(). Attackers can craft a .blend file with malicious TEST block dimensions that trigger an out-of-bounds write when blender-thumbnailer or the Windows shell extension previews it, causing crashes or code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Blender before 4.5.15 and 5.x before 5.2.3 Heap Buffer Overflow via Thumbnail Extraction
Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thumbnail extractor caused by 32-bit integer overflow in thumb_data_vertical_flip(). Attackers can craft a .blend file with malicious TEST block dimensions that trigger an out-of-bounds write when blender-thumbnailer or the Windows shell extension previews it, causing crashes or code execution.
- Record
CVE-2026-119719- CVSS 4.0
- 8.5 High
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
EUVDEUVD-2026-114124
Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thumbnail extractor caused by 32-bit integer overflow in thumb_data_vertical_flip(). Attackers can craft a .blend file with malicious TEST block dimensions that trigger an out-of-bounds write when blender-thumbnailer or the Windows shell extension previews it, causing crashes or code execution.
- Record
EUVD-2026-114124- CVSS 4.0
- 8.5 High
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-27m9-m9xq-2vm6
Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the...
Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thumbnail extractor caused by 32-bit integer overflow in thumb_data_vertical_flip(). Attackers can craft a .blend file with malicious TEST block dimensions that trigger an out-of-bounds write when blender-thumbnailer or the Windows shell extension previews it, causing crashes or code execution.
- Record
GHSA-27m9-m9xq-2vm6- CVSS 4.0
- 8.5 High
CVSS:4.0/AV:L/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 - CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
NVD
Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thumbnail extractor caused by 32-bit integer overflow in thumb_data_vertical_flip(). Attackers can craft a .blend file with malicious TEST block dimensions that trigger an out-of-bounds write when blender-thumbnailer or the Windows shell extension previews it, causing crashes or code execution.
- Record
CVE-2026-119719- CVSS 4.0
- 8.5 High
CVSS:4.0/AV:L/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 - CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-190
- Updated
- 2026-11-03
OSVDEBIAN-CVE-2026-119719
Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thumbnail extractor caused by 32-bit integer overflow in thumb_data_vertical_flip(). Attackers can craft a .blend file with malicious TEST block dimensions that trigger an out-of-bounds write when blender-thumbnailer or the Windows shell extension previews it, causing crashes or code execution.
- Record
DEBIAN-CVE-2026-119719- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-04
OSVUBUNTU-CVE-2026-119719
Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thumbnail extractor caused by 32-bit integer overflow in thumb_data_vertical_flip(). Attackers can craft a .blend file with malicious TEST block dimensions that trigger an out-of-bounds write when blender-thumbnailer or the Windows shell extension previews it, causing crashes or code execution.
- Record
UBUNTU-CVE-2026-119719- CVSS 4.0
- 8.5 High
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-04
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
blenderDebian:12 |
All versions, plus listed versions 3.4.1+dfsg-23.6.2+dfsg-13.6.2+dfsg-24.0.2+dfsg-14.1.1+dfsg-1 Show 20 moreShow less4.1.1+dfsg-24.1.1+dfsg-34.2.1+dfsg-14.2.2+dfsg-14.2.3+dfsg-14.2.3+dfsg-24.2.3+dfsg-34.3.0+dfsg-14.3.2+dfsg-14.3.2+dfsg-25.0.1+dfsg-15.0.1+dfsg-25.0.1+dfsg-35.0.1+dfsg-45.0.1+dfsg-55.0.1+dfsg-65.0.1+dfsg-75.0.1+dfsg-85.0.1+dfsg-95.2.2+dfsg-1 |
None known |
blenderDebian:13 |
All versions, plus listed versions 4.3.2+dfsg-25.0.1+dfsg-15.0.1+dfsg-25.0.1+dfsg-35.0.1+dfsg-4 Show 6 moreShow less5.0.1+dfsg-55.0.1+dfsg-65.0.1+dfsg-75.0.1+dfsg-85.0.1+dfsg-95.2.2+dfsg-1 |
None known |
blenderUbuntu:16.04:LTS |
All versions, plus listed versions 2.74+dfsg0-4build22.75.a+dfsg0-2ubuntu22.75.a+dfsg0-2ubuntu32.76.b+dfsg0-32.76.b+dfsg0-3build1 |
None known |
blenderUbuntu:18.04:LTS |
All versions, plus listed versions 2.78.c+dfsg0-2build12.79+dfsg0-2build12.79+dfsg0-32.79+dfsg0-3build12.79.b+dfsg0-12.79.b+dfsg0-1ubuntu1.18.04.1 |
None known |
blenderUbuntu:20.04:LTS |
All versions, plus listed versions 2.80+dfsg-32.80+dfsg-3build12.80+dfsg-42.81.a+dfsg-5build32.82+dfsg-12.82+dfsg-1build12.82.a+dfsg-1 |
None known |
blenderUbuntu:22.04:LTS |
All versions, plus listed versions 2.93.3+dfsg-32.93.5+dfsg-12.93.5+dfsg-1build13.0.1+dfsg-7 |
None known |
blenderUbuntu:24.04:LTS |
All versions, plus listed versions 3.6.2+dfsg-2ubuntu13.6.2+dfsg-2ubuntu24.0.2+dfsg-1ubuntu14.0.2+dfsg-1ubuntu24.0.2+dfsg-1ubuntu44.0.2+dfsg-1ubuntu64.0.2+dfsg-1ubuntu74.0.2+dfsg-1ubuntu8 |
None known |
blenderUbuntu:26.10 |
All versions, plus listed versions 5.0.1+dfsg-1ubuntu15.0.1+dfsg-1ubuntu35.0.1+dfsg-3build15.0.1+dfsg-5 |
None known |
blenderUbuntu:26.04:LTS |
All versions, plus listed versions 4.3.2+dfsg-2ubuntu25.0.1+dfsg-1ubuntu1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| facts, references | NVD | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-119719 is a high vulnerability (CVSS 8.5) in Blender, published October 30, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 4th percentile. No source names a fixed version.
References
projects.blender.org/blender/blender/pulls/164279
vulncheck.com/advisories/blender-before-4.5.15-and-5-x-before-5.2.3-heap-buffer-overflow-via-thumbnail-extraction
nvd.nist.gov/vuln/detail/CVE-2026-119719