Is CVE-2016-8649 in the CISA KEV catalog?

No. CVE-2016-8649 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-8649?

CVE-2016-8649 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2016-8649?

CVE-2016-8649 has an EPSS score of 2.81% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-8649?

Upgrade lxc on debian 11 to 1:2.0.6-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2016-8649

CRITICALEPSS 85th pctl

9.1

CVSS v3

NVD

Description

lxc-attach in LXC before 1.0.9 and 2.x before 2.0.6 allows an attacker inside of an unprivileged container to use an inherited file descriptor, of the host's /proc, to access the rest of the host's filesystem via the openat() family of syscalls.

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

lxcDebian

Fixed in:1:2.0.6-1CVE-2016-8649

liblxc1Ubuntu

Fixed in:1.0.8-0ubuntu0.4USN-3136-1

Fixed in:2.0.5-0ubuntu1~ubuntu16.04.3USN-3136-1

lxcUbuntu

Fixed in:1.0.8-0ubuntu0.4USN-3136-1

Fixed in:2.0.5-0ubuntu1~ubuntu16.04.3USN-3136-1

lxc1Ubuntu

Fixed in:2.0.5-0ubuntu1~ubuntu16.04.3USN-3136-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Exploit Intelligence

2.81%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch2

Third-Party Advisory4

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.