How severe is CVE-2017-18641?

CVE-2017-18641 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-18641 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18641?

CVE-2017-18641 affects Linuxcontainers Lxc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18641?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-18641 published?

CVE-2017-18641 was published on 2020-02-10 and last updated on 2026-06-17.

CVE-2017-18641

CVE-2017-18641 is a high-severity vulnerability in Linuxcontainers Lxc with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 9.3
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Linuxcontainers Lxc
Published: 2020-02-10
Last modified: 2026-06-17

Description

In LXC 2.0, many template scripts download code over cleartext HTTP, and omit a digital-signature check, before running it to bootstrap containers.

Frequently asked questions

What is CVE-2017-18641?: In LXC 2.0, many template scripts download code over cleartext HTTP, and omit a digital-signature check, before running it to bootstrap containers.
How severe is CVE-2017-18641?: CVE-2017-18641 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-18641 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18641?: CVE-2017-18641 affects Linuxcontainers Lxc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18641?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-18641 published?: CVE-2017-18641 was published on 2020-02-10 and last updated on 2026-06-17.

References

https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1661447

Affected products (1)

cpe:2.3:a:linuxcontainers:lxc:2.0.0:-:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-56162 — Critical (CVSS 10.0): Improper authentication in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.
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