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_* acce

Routine

MEDIUM 6.1UPGRADE

CVE-2026-119721 is a medium-severity flaw (CVSS 6.1) affecting blender. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-125
Published	2026-10-30
Last modified	2026-11-03

Publisher (CNA): VulnCheck · Vendor: blender

Last updated 2026-11-03 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-30 16:17 UTCPublished CVE record published
2026-11-03 16:02 UTCUpdated Record last modified

blender blender UPGRADE

Affected: < 4.5.15 · >= 5.0.0 and < 5.2.3

Fixed in: 4.5.15, 5.2.3

Safe to downgrade to: a release before 5.0.0

1. Check installed version

apt-cache policy blender || rpm -q blender || blender --version

2. UPGRADE to 4.5.15 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade blender

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade blender

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 5.0.0 (Debian / Ubuntu)

apt-cache madison blender sudo apt install blender=<VERSION_BEFORE_5.0.0> sudo apt-mark hold blender

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list blender sudo dnf downgrade blender-<VERSION_BEFORE_5.0.0> sudo dnf versionlock add blender

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Advisories and coverage

Research and news

VulDB Recent Entries: CVE-2026-119721 | Blender up to 4.5.14/5.2.2 ID Block Reader readfile.cc blo_bhead_id out-of-bounds 2026-10-30

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-119721?

blender: upgrade to 4.5.15, 5.2.3. Exact commands for each OS are on this page.

Is CVE-2026-119721 being exploited?

CVE-2026-119721 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-119721 affect?

CVE-2026-119721 affects blender. Severity is medium (CVSS 6.1). 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 blo

How urgent is CVE-2026-119721?

Priority 23/100. No elevated risk signals yet.

Related CVEs

CVE-2026-119722 HIGH 7.8 UPGRADE Blender before 4.5.15 and 5.x before 5.2.3 contains a heap out-of-bounds access vulnerability in read_struct()
CVE-2026-119719 HIGH 7.8 UPGRADE Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thu
CVE-2026-119720 MEDIUM 5.5 UPGRADE Blender before 4.5.15 and 5.x before 5.2.3 contains a heap out-of-bounds read vulnerability in read_file_dna()
CVE-2026-119718 HIGH 7.8 UPGRADE Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability caused by integer ove
CVE-2022-2833 HIGH 7.5 DOWNGRADE Endless Infinite loop in Blender-thumnailing due to logical bugs.

References

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