CVE-2007-1189

7.2 HIGH 0.8% exploit odds No fix listed

What it is

Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows local users to overwrite certain memory addresses with kernel memory via a large n argument, as demonstrated by (1) modifying the iseve function to gain privileges and (2) making the devpermcheck function grant unrestricted device permissions.

At a glance

Exploitability: Can be exploited locally on the machine without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 0.8% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2007-03-02 21:18 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 22:37 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.8% in the next 30 days (EPSS).
Severity: 7.2 HIGH (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2007-03-02 21:18 UTC
Last modified: 2026-06-16 22:37 UTC
Exploit probability: 0.8% · EPSS, next 30 days
Record status: Modified

Affected

Bell Labs Plan 9

Attack profile CVSS 2.0 · 7.2

Attack vector: Local
Complexity: Low
Authentication: None
Confidentiality: Complete
Integrity: Complete
Availability: Complete

Raw vector

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

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-2007-1189.md and follow it. Check whether this project is affected by CVE-2007-1189. 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