What is CVE-2018-12691?

CVE-2018-12691 is a medium-severity vulnerability in Onosproject Onos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.8/10. Published 2018-07-05.

How severe is CVE-2018-12691?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Onosproject Onos

CVE-2018-12691

Time-of-check to time-of-use (TOCTOU) race condition in org.onosproject.acl (aka the access control application) in ONOS v1.13 and earlier allows attackers to bypass network access control via data plane packet injection.

Vulnerability class: Race Condition

Published 2018-07-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.4th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Onosproject Onos

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

gerrit.onosproject.org/ (Patch, Third Party Advisory)
wiki.onosproject.org/display/ONOS/Security+advisories (Third Party Advisory)

Frequently asked questions

What is CVE-2018-12691?: CVE-2018-12691 is a medium-severity vulnerability in Onosproject Onos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.8/10. Published 2018-07-05.
How severe is CVE-2018-12691?: Medium severity. CVSS v3 base score is 6.8 out of 10.