CVE-2026-21996

Name: CVE-2026-21996
Creator: NVD / NIST
Published: 2026-05-01T18:16:13.75+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.11%

Last modified Jun 17, 2026

CVE-2026-21996 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An unprivileged attacker can reliably trigger a crash of the dtrace process with a malicious ELF binary due to an integer Divide-by-Zero in Pbuild_file_symtab(). EPSS estimates a 0.11% chance of exploitation in the next 30 days.

Description

An unprivileged attacker can reliably trigger a crash of the dtrace process with a malicious ELF binary due to an integer Divide-by-Zero in Pbuild_file_symtab()

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.11%

1.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-369

Affected Software

Vendor	Product	Versions	Update
Oracle	Linux	8	—
Oracle	Linux	9	0
Oracle	Linux	10	0

References

https://linux.oracle.com/cve/CVE-2026-21996.htmlVendor Advisory

Timeline

Published: May 1, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-21996?

An unprivileged attacker can reliably trigger a crash of the dtrace process with a malicious ELF binary due to an integer Divide-by-Zero in Pbuild_file_symtab()

How severe is CVE-2026-21996?

CVE-2026-21996 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.11% probability of exploitation in the next 30 days.

How do I fix CVE-2026-21996?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-21996?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST