What is CVE-2011-2765?

CVE-2011-2765 is a high-severity vulnerability in Pyro Project, classified under Improper Link Resolution Before File Access. CVSS score: 7.5/10. Published 2018-08-20.

How severe is CVE-2011-2765?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Pyro Project

CVE-2011-2765

pyro before 3.15 unsafely handles pid files in temporary directory locations and opening the pid file as root. An attacker can use this flaw to overwrite arbitrary files via symlinks.

Published 2018-08-20 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.022 (81.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Pyro Project

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

github.com/irmen/Pyro3/commit/554e095a62c4412c91f981e72fd34a936ac2bf1e (Third Party Advisory)
pythonhosted.org/Pyro/12-changes.html (Vendor Advisory)
bugs.debian.org/631912 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2011-2765?: CVE-2011-2765 is a high-severity vulnerability in Pyro Project, classified under Improper Link Resolution Before File Access. CVSS score: 7.5/10. Published 2018-08-20.
How severe is CVE-2011-2765?: High severity. CVSS v3 base score is 7.5 out of 10.