How severe is CVE-2012-2945?

CVE-2012-2945 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2012-2945?

CVE-2012-2945 affects the following packages: org.apache.hadoop:hadoop-main (Maven). Ecosystems affected: Maven.

How do I fix CVE-2012-2945?

Update org.apache.hadoop:hadoop-main to 1.0.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2012-2945 is resolved across your whole dependency graph.

How do I detect CVE-2012-2945 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.hadoop:hadoop-main, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2012-2945 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2012-2945 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2012-2945, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2012-2945?

CVE-2012-2945 has an EPSS (Exploit Prediction Scoring System) score of 2.7%, placing it in the 86th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2012-2945?

CVE-2012-2945 is classified as CWE-59 (CWE-59). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2012-2945 published, and has it been updated?

CVE-2012-2945 was published on April 23, 2022 and was last updated on February 16, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

HIGH severity

CVE-2012-2945 — hadoop-main

HIGH

CVE-2012-2945 is a high-severity (CVSS 7.5) CWE-59 vulnerability in org.apache.hadoop:hadoop-main. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for org.apache.hadoop:hadoop-main — see the affected versions and patch details below.

Hadoop symlink vulnerability

Published

Apr 23, 2022

Updated

Feb 16, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

1 known

Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

2.7%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs86th percentile — riskier than 86% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

☕org.apache.hadoop:hadoop-main

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Hadoop 1.0.3 contains a symlink vulnerability as a result of storing pid files in the shared /tmp directory by default.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.hadoop:hadoop-main`	all versions	1.0.4`org.apache.hadoop:hadoop-main:1.0.4`

Affected Products

1 product · 1 configurations

Application

hadoopapache

1 version

1.0.3

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Hadoop 1.0.3 contains a symlink vulnerability.

seclists.orgNVDOct 2019

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.hadoop:hadoop-main, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.hadoop:hadoop-main to 1.0.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2012-2945 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Hadoop 1.0.3 contains a symlink vulnerability as a result of storing pid files in the shared `/tmp` directory by default.

O3 Security · Impact-Aware SCA

Is CVE-2012-2945 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

7.5/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CWE Classification

CWE-59CWE-59

Weaponization

No Nuclei template or Metasploit module yet. 1 public proof-of-concept reference is listed on this page.

OpenSSF Scorecard

Package health score

hadoop

7.7/10

Code-Review10/10

Maintained10/10

Branch-ProtectionN/A

Assessed Nov 2, 2026

Timeline

First exploit

Oct 31, 2019

Disclosed

Apr 23, 2022

Last updated

Feb 16, 2024

Identifiers

CVE-2012-2945

References

Advisorynvd.nist.gov · CVE 2012 2945 Webbugs.debian.org · bugreport.cgi Webseclists.org Websecurity-tracker.debian.org · CVE 2012 2945 Packagegithub.com · hadoop

Related vulnerabilities

This CVE is high severity; 6 of 8 other CVEs affecting hadoop-main are rated as high or higher (top: high).

CVE-2012-1574CVE-2018-11764CVE-2018-11765CVE-2018-11768CVE-2018-8029CVE-2018-11767CVE-2018-1296CVE-2017-15713

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedFeb 16, 2024

CVE-2012-2945 — hadoop-main

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2012-2945 in your dependencies?