SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-42392

An attacker may pass a JNDI driver name and a URL leading to a LDAP or RMI servers, causing remote code execution.

CRITICAL 9.8EPSS 83.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 83.2%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

The org.h2.util.JdbcUtils.getConnection method of the H2 database takes as parameters the class name of the driver and URL of the database. An attacker may pass a JNDI driver name and a URL leading to a LDAP or RMI servers, causing remote code execution. This can be exploited through various attack vectors, most notably through the H2 Console which leads to unauthenticated remote code execution.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
83.18% probability · 100th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-502
Affected
h2database/h2 · debian/debian linux · oracle/communications cloud native core policy
Source
reefs@jfrog.com
EPSS trend
0%43%85%3 November 2026: 83.18%3 November 20263 November 2026

EPSS 83.2% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.