CVE-2012-4522

5.0 MEDIUM 2% exploit odds No fix listed

What it is

The rb_get_path_check function in file.c in Ruby 1.9.3 before patchlevel 286 and Ruby 2.0.0 before r37163 allows context-dependent attackers to create files in unexpected locations or with unexpected names via a NUL byte in a file path.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 2.2% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2012-11-24 20:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:45 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 2.2% in the next 30 days (EPSS).
Severity: 5.0 MEDIUM (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2012-11-24 20:55 UTC
Last modified: 2026-06-16 23:45 UTC
Exploit probability: 2.2% · EPSS, next 30 days
Weakness: CWE-264
Record status: Modified

Affected

ruby-lang Ruby 1.9.3
ruby-lang Ruby 2.0.0

Attack profile CVSS 2.0 · 5.0

Attack vector: Network
Complexity: Low
Authentication: None
Confidentiality: None
Integrity: Partial
Availability: None

Raw vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2012-4522.md and follow it. Check whether this project is affected by CVE-2012-4522. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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References

NVD record · CVE.org record