Is CVE-2026-4633 actively exploited?

No active exploitation of CVE-2026-4633 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4633 be exploited remotely?

Yes. CVE-2026-4633 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4633?

CVE-2026-4633 has a CVSS score of 3.7 (LOW).

HOME VULNERABILITIESCVE-2026-4633

LOW

CVE-2026-4633

CWE-209Published: March 23, 2026· Updated: Mar 23, 2026

3.7

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.0th

Official Description

A flaw was found in Keycloak. A remote attacker can exploit differential error messages during the identity-first login flow when Organizations are enabled. This vulnerability allows an attacker to determine the existence of users, leading to information disclosure through user enumeration.

NVD Source

Technical Analysis

CVE-2026-4633 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

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GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

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Security advisories & exploits

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News & Research Mentioning CVE-2026-4633

New Linux pedit COW Exploit Enables Root Access by Poisoning Cached Binaries

The Hacker News· Jun 26, 2026

A flaw in the Linux kernel's traffic-control subsystem can let a local unprivileged user gain root on affected systems. CVE-2026-46331, nicknamed "pedit COW," is an out-of-bounds write in the packet-editing action (act_pedit) that corrupts shared page-cache memory. A public, working exploit appeared within a day of the CVE assignment on June 16. Red Hat rates the flaw as [xlite_meta score:50 src:The Hacker News xlite_fp:51e96863a0ad1b6a77014dea1062983349e307e69ff1d5e5b30294cadbdfdb28]

9-Year-Old Linux Kernel Flaw Enables Root Command Execution on Major Distros

The Hacker News· May 21, 2026

Cybersecurity researchers have disclosed details of a vulnerability in the Linux kernel that remained undetected for nine years. The vulnerability, tracked as CVE-2026-46333 (CVSS score: 5.5), is a case of improper privilege management that could permit an unprivileged local user to disclose sensitive files and execute arbitrary commands as root on default installations of several major [xlite_meta score:50 src:The Hacker News xlite_fp:75b6b296ee64a41d42a7c5f5f4c84bb639c047f1af8d1f54f2d1a29c217457d1]