How severe is CVE-2017-1000409?

CVE-2017-1000409 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-1000409 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-1000409?

CVE-2017-1000409 affects Gnu Glibc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-1000409?

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-2017-1000409 published?

CVE-2017-1000409 was published on 2018-02-01 and last updated on 2026-06-17.

CVE-2017-1000409

CVE-2017-1000409 is a high-severity vulnerability in Gnu Glibc with a CVSS 3.x base score of 7.0. 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-119.

Key facts

Severity: High (CVSS 3.x base score 7.0)
CVSS v2: 6.9
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Gnu Glibc
Published: 2018-02-01
Last modified: 2026-06-17

Description

A buffer overflow in glibc 2.5 (released on September 29, 2006) and can be triggered through the LD_LIBRARY_PATH environment variable. Please note that many versions of glibc are not vulnerable to this issue if patched for CVE-2017-1000366.

Frequently asked questions

What is CVE-2017-1000409?: A buffer overflow in glibc 2.5 (released on September 29, 2006) and can be triggered through the LD_LIBRARY_PATH environment variable. Please note that many versions of glibc are not vulnerable to this issue if patched for CVE-2017-1000366.
How severe is CVE-2017-1000409?: CVE-2017-1000409 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-1000409 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-1000409?: CVE-2017-1000409 affects Gnu Glibc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-1000409?: 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-2017-1000409 published?: CVE-2017-1000409 was published on 2018-02-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gnu:glibc:2.5:*:*:*:*:*:*:*

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