How severe is CVE-2011-5320?

CVE-2011-5320 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2011-5320 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-5320?

CVE-2011-5320 affects Gnu Glibc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-5320?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-5320 published?

CVE-2011-5320 was published on 2017-10-18 and last updated on 2026-06-16.

CVE-2011-5320

CVE-2011-5320 is a medium-severity vulnerability in Gnu Glibc with a CVSS 3.x base score of 6.2. 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: Medium (CVSS 3.x base score 6.2)
CVSS v2: 2.1
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Gnu Glibc
Published: 2017-10-18
Last modified: 2026-06-16

Description

scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.

Frequently asked questions

What is CVE-2011-5320?: scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.
How severe is CVE-2011-5320?: CVE-2011-5320 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2011-5320 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-5320?: CVE-2011-5320 affects Gnu Glibc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-5320?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-5320 published?: CVE-2011-5320 was published on 2017-10-18 and last updated on 2026-06-16.

References

Affected products (1)

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

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