How severe is CVE-2017-1000381?

CVE-2017-1000381 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 high, integrity none, and availability none.

Is CVE-2017-1000381 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-1000381?

CVE-2017-1000381 primarily affects C-ares. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-1000381?

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-2017-1000381 published?

CVE-2017-1000381 was published on 2017-07-07 and last updated on 2026-06-17.

CVE-2017-1000381

CVE-2017-1000381 is a high-severity vulnerability in C-ares with a CVSS 3.x base score of 7.5. 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-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: C-ares
Published: 2017-07-07
Last modified: 2026-06-17

Description

The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR responses, could be triggered to read memory outside of the given input buffer if the passed in DNS response packet was crafted in a particular way.

Frequently asked questions

What is CVE-2017-1000381?: The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR responses, could be triggered to read memory outside of the given input buffer if the passed in DNS response packet was crafted in a particular way.
How severe is CVE-2017-1000381?: CVE-2017-1000381 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 high, integrity none, and availability none.
Is CVE-2017-1000381 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-1000381?: CVE-2017-1000381 primarily affects C-ares. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-1000381?: 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-2017-1000381 published?: CVE-2017-1000381 was published on 2017-07-07 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:a:c-ares:c-ares:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:c-ares:c-ares:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:c-ares:c-ares:1.9.1:*:*:*:*:*:*:*
cpe:2.3:a:c-ares:c-ares:1.10.0:*:*:*:*:*:*:*
cpe:2.3:a:c-ares:c-ares:1.12.0:*:*:*:*:*:*:*
cpe:2.3:a:c-ares_project:c-ares:1.11.0:*:*:*:*:*:*:*
cpe:2.3:a:c-ares_project:c-ares:1.11.0:rc1:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*

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