Is CVE-2026-21996 in the CISA KEV catalog?

No. CVE-2026-21996 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-21996?

CVE-2026-21996 has a CVSS v3 base score of 3.3 (LOW).

What is the EPSS score for CVE-2026-21996?

CVE-2026-21996 has an EPSS score of 0.11% (2th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-21996?

Upgrade dtrace on debian unstable to 2.0.7-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-21996

LOW

3.3

CVSS v3

NVD

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()

CWE-369

How to fix

Remediation Available

dtraceDebian

Fixed in:2.0.7-1CVE-2026-21996

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.11%probability of exploitation in 30 days

2ndpercentile

Low risk: more likely to be exploited than 2% of all known CVEs.

References

Vendor Advisory1

linux.oracle.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-05.