CVE-2026-64812: In JetBrains IntelliJ IDEA before 2026.2 unauthorized input injection was possible in a Remote Development ses

Q: How do I fix CVE-2026-64812?

intellij idea: upgrade to 2026.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-64812 being exploited?

CVE-2026-64812 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-64812 affect?

CVE-2026-64812 affects intellij idea. Severity is critical (CVSS 10.0). In JetBrains IntelliJ IDEA before 2026.2 unauthorized input injection was possible in a Remote Development session

Q: How urgent is CVE-2026-64812?

Priority 53/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This month

CRITICAL 10.0REMOTEUPGRADE

CVE-2026-64812 is a critical-severity flaw (CVSS 10.0) affecting intellij idea. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In JetBrains IntelliJ IDEA before 2026.2 unauthorized input injection was possible in a Remote Development session

Why this priority

Critical severity
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-07-23
Last modified	2026-10-24

Publisher (CNA): JetBrains s.r.o. · Vendor: jetbrains

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-23 12:18 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

jetbrains intellij idea UPGRADE

Affected: < 2026.2

Fixed in: 2026.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy intellij-idea || rpm -q intellij-idea || intellij-idea --version

2. UPGRADE to 2026.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade intellij-idea

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade intellij-idea

Note

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

Exact fixes by distribution

Fedora 46 · gnome-shell-extension-tiling-assistant · FIXED · 56-1.fc46 · FEDORA-2026-ebf66a5321 · source

sudo dnf upgrade --advisory=FEDORA-2026-ebf66a5321

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-2026-64812?

intellij idea: upgrade to 2026.2. Exact commands for each OS are on this page.

Is CVE-2026-64812 being exploited?

CVE-2026-64812 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-2026-64812 affect?

CVE-2026-64812 affects intellij idea. Severity is critical (CVSS 10.0). In JetBrains IntelliJ IDEA before 2026.2 unauthorized input injection was possible in a Remote Development session

How urgent is CVE-2026-64812?

Priority 53/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

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References

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