5.5

CVE-2026-21996: oracle corporation oracle linux Divide By Zero

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-21996DEBIAN-CVE-2026-21996
Published 01-05-2026Last modified 01-05-2026
Open JSON

Vulnerability summary

CVE-2026-21996 is a medium (CVSS 5.5) Divide By Zero vulnerability in oracle corporation oracle linux. EPSS estimates a 0.11% chance of exploitation in the next 30 days, higher than 1.2% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.11%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-05-2026
    PublishedVulnerability first disclosed.
  2. 01-05-2026
    Last modifiedVulnerability information updated.

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()

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.11%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

0.00 pp

From 0.11% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.11%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • dtrace< 2.0.7-1
Oracle1 product
Oracle corporation1 product
Ubuntu1 product
  • dtraceAll versions (No fix recorded)

4 vendors · 4 products

References

4 links