CVE-2021-42392: debian debian_linux Deserialization of Untrusted Data
Vulnerability summary
CVE-2021-42392 is a high (CVSS 10.0) Deserialization of Untrusted Data vulnerability in debian debian_linux. EPSS estimates a 83.18% chance of exploitation in the next 30 days, higher than 99.6% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 12 · Related 2Timeline
- 07-01-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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 metrics
5 scores · 4 sources · 2 versions- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · MavenEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
83.18%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
No change 0.00 pp
From 83.18% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (jfrog.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- h2database< 2.1.210-1
- debian_linuxEOL9.0 | 10.0 | 11.0
Com.h2database1 product
- h2≥ 1.1.100, < 2.0.206
H2database1 product
- h2≥ 1.1.000 (No fix recorded) | ≥ 1.1.000, ≤ 2.0.204
Oracle1 product
Ubuntu1 product
- h2database< 1.4.191-1ubuntu0.1~esm1 | < 1.4.196-2ubuntu0.1~esm1 | < 1.4.197-4+deb10u1build0.20.04.1 | < 2.1.210+really1.4.197-1
5 vendors · 6 products
References
18 links- github.com/h2database/h2database/security/advisories/GHSA-h376-j262-vhq6REPORTWEBMitigationThird Party Advisory
- jfrog.com/blog/the-jndi-strikes-back-unauthenticated-rce-in-h2-database-console/REPORTExploitTechnical DescriptionVendor Advisory
- security.netapp.com/advisory/ntap-20220119-0001/Third Party Advisory
