How severe is CVE-2017-9217?

CVE-2017-9217 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-9217 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9217?

CVE-2017-9217 affects Systemd Project Systemd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9217?

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-2017-9217 published?

CVE-2017-9217 was published on 2017-05-24 and last updated on 2026-06-17.

CVE-2017-9217

CVE-2017-9217 is a high-severity vulnerability in Systemd Project Systemd with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 15% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Systemd Project Systemd
Published: 2017-05-24
Last modified: 2026-06-17

Description

systemd-resolved through 233 allows remote attackers to cause a denial of service (daemon crash) via a crafted DNS response with an empty question section.

Frequently asked questions

What is CVE-2017-9217?: systemd-resolved through 233 allows remote attackers to cause a denial of service (daemon crash) via a crafted DNS response with an empty question section.
How severe is CVE-2017-9217?: CVE-2017-9217 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-9217 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9217?: CVE-2017-9217 affects Systemd Project Systemd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9217?: 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-2017-9217 published?: CVE-2017-9217 was published on 2017-05-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*

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