CVE-2025-33042 | Apache Avro Java SDK: Code injection on Java generated code

Improper Control of Generation of Code ('Code Injection') vulnerability in Apache Avro Java SDK when generating specific records from untrusted Avro schemas. This issue affects Apache Avro Java SDK: all versions through 1.11.4 and version 1.12.0. Users are recommended to upgrade to version 1.12.1 or 1.11.5, which fix the issue.

Published: 2026-02-13 Last update: 2026-02-20 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-33042 is rated Low Risk (35.2/100): CVSS High severity, with low exploitation likelihood (EPSS 0.06%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-33042

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-17 0.03% 0.06% +0.03%
2 2026-02-13 — 0.03% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-33042

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.3 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 3.4 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-33042

GitHub Security Advisory for CVE-2025-33042

GHSA-rp46-r563-jrc7 · Severity: medium · Ecosystem: maven — Apache Avro Java SDK is Vulnerable to Code Injection

OS Trackers for CVE-2025-33042

vendor priority summary link
alpine — CVE-2025-33042: 1 source package rows (avro); 2 state rows across 1 repos (edge-community); fixed 0, open 2. https://security.alpinelinux.org/vuln/CVE-2025-33042
redhat medium — https://access.redhat.com/security/cve/CVE-2025-33042

Affected software / configurations for CVE-2025-33042

Vendor Product Version Raw CPE
apache avro < 1.11.5 cpe:2.3:a:apache:avro:*:*:*:*:*:-:*:*
apache avro 1.12.0 cpe:2.3:a:apache:avro:1.12.0:-:*:*:*:-:*:*
apache avro 1.12.0 cpe:2.3:a:apache:avro:1.12.0:rc0:*:*:*:-:*:*
apache avro 1.12.0 cpe:2.3:a:apache:avro:1.12.0:rc1:*:*:*:-:*:*

References for CVE-2025-33042

URL Tags
https://lists.apache.org/thread/fy88wmgf1lj9479vrpt12cv8x73lroj1 Mailing List Vendor Advisory Issue Tracking
http://www.openwall.com/lists/oss-security/2026/02/12/2 Mailing List Third Party Advisory
cvelogic Threat Intelligence