CVE-2026-119721
Blender before 4.5.15 and 5.x before 5.2.3 Out-of-Bounds Read via blo_bhead_id Accessors
Blender before 4.5.15 and 5.x before 5.2.3 contains an out-of-bounds read vulnerability in blo_bhead_id_* accessors in readfile.cc that read ID fields without block length checks. Attackers can supply a crafted .blend file with short ID blocks that, when browsed or appended from, causes heap over-reads leading to crashes or heap memory disclosure.
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
- Low
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Blender before 4.5.15 and 5.x before 5.2.3 Out-of-Bounds Read via blo_bhead_id Accessors
Blender before 4.5.15 and 5.x before 5.2.3 contains an out-of-bounds read vulnerability in blo_bhead_id_* accessors in readfile.cc that read ID fields without block length checks. Attackers can supply a crafted .blend file with short ID blocks that, when browsed or appended from, causes heap over-reads leading to crashes or heap memory disclosure.
- Record
CVE-2026-119721- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
EUVDEUVD-2026-114126
Blender before 4.5.15 and 5.x before 5.2.3 contains an out-of-bounds read vulnerability in blo_bhead_id_* accessors in readfile.cc that read ID fields without block length checks. Attackers can supply a crafted .blend file with short ID blocks that, when browsed or appended from, causes heap over-reads leading to crashes or heap memory disclosure.
- Record
EUVD-2026-114126- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-8hxf-4775-5j3p
Blender before 4.5.15 and 5.x before 5.2.3 contains an out-of-bounds read vulnerability in...
Blender before 4.5.15 and 5.x before 5.2.3 contains an out-of-bounds read vulnerability in blo_bhead_id_* accessors in readfile.cc that read ID fields without block length checks. Attackers can supply a crafted .blend file with short ID blocks that, when browsed or appended from, causes heap over-reads leading to crashes or heap memory disclosure.
- Record
GHSA-8hxf-4775-5j3p- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/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
- 6.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
NVD
Blender before 4.5.15 and 5.x before 5.2.3 contains an out-of-bounds read vulnerability in blo_bhead_id_* accessors in readfile.cc that read ID fields without block length checks. Attackers can supply a crafted .blend file with short ID blocks that, when browsed or appended from, causes heap over-reads leading to crashes or heap memory disclosure.
- Record
CVE-2026-119721- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/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
- 6.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-03
OSV
Blender before 4.5.15 and 5.x before 5.2.3 Out-of-Bounds Read via blo_bhead_id Accessors
Blender before 4.5.15 and 5.x before 5.2.3 contains an out-of-bounds read vulnerability in blo_bhead_id_* accessors in readfile.cc that read ID fields without block length checks. Attackers can supply a crafted .blend file with short ID blocks that, when browsed or appended from, causes heap over-reads leading to crashes or heap memory disclosure.
- Record
CVE-2026-119721- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-125
- Updated
- 2026-11-05
OSVDEBIAN-CVE-2026-119721
Blender before 4.5.15 and 5.x before 5.2.3 contains an out-of-bounds read vulnerability in blo_bhead_id_* accessors in readfile.cc that read ID fields without block length checks. Attackers can supply a crafted .blend file with short ID blocks that, when browsed or appended from, causes heap over-reads leading to crashes or heap memory disclosure.
- Record
DEBIAN-CVE-2026-119721- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/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 - Updated
- 2026-11-04
OSVUBUNTU-CVE-2026-119721
Blender before 4.5.15 and 5.x before 5.2.3 contains an out-of-bounds read vulnerability in blo_bhead_id_* accessors in readfile.cc that read ID fields without block length checks. Attackers can supply a crafted .blend file with short ID blocks that, when browsed or appended from, causes heap over-reads leading to crashes or heap memory disclosure.
- Record
UBUNTU-CVE-2026-119721- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H - Updated
- 2026-11-05
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 |
|---|---|---|
| references | OSV | |
| 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-2026-119721 is a medium vulnerability (CVSS 6.9) in Blender, published October 30, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 6th percentile. No source names a fixed version.
References
projects.blender.org/blender/blender/pulls/164279
Show 7 moreShow less
vulncheck.com/advisories/blender-before-4.5.15-and-5-x-before-5.2.3-out-of-bounds-read-via-blo-bhead-id-accessors
nvd.nist.gov/vuln/detail/CVE-2026-119721
github.com/advisories/GHSA-8hxf-4775-5j3p
security-tracker.debian.org/tracker/CVE-2026-119721
ubuntu.com/security/CVE-2026-119721
cve.org/CVERecord?id=CVE-2026-119721