CVE-2026-21996

LOWNVD 3.33.3—

3.3

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()

CVSS v3: 3.3
EG Score: 3.3(high)
EPSS: 3.9%
KEV: Not listed

Published

May 1, 2026

Last Modified

May 5, 2026

References (1)

secalert_us@oraclehttps://linux.oracle.com/cve/CVE-2026-21996.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-369Divide By Zero

Data Freshness Timeline

(refreshed 18× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-22 21:16 UTCepss_batch
2026-05-21 22:43 UTCepss_batch

Frequently asked(5)

What is CVE-2026-21996?

CVE-2026-21996 is a low vulnerability published on May 1, 2026. 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 Pbuildfilesymtab()

When was CVE-2026-21996 disclosed?

CVE-2026-21996 was first published in the National Vulnerability Database on May 1, 2026, with the most recent update on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-21996 actively exploited?

CVE-2026-21996 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

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

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

How do I remediate CVE-2026-21996?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21996, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-21996

📅 Published

🔄 Last Modified

🔗 References (1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-21996?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (1)

Frequently asked(5)

Related CVEs(same CWE)