How severe is CVE-2016-4748?

CVE-2016-4748 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2016-4748 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4748?

CVE-2016-4748 affects Apple Mac Os X. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-4748?

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

When was CVE-2016-4748 published?

CVE-2016-4748 was published on 2016-09-25 and last updated on 2026-06-17.

CVE-2016-4748

CVE-2016-4748 is a medium-severity vulnerability in Apple Mac Os X with a CVSS 3.x base score of 5.3. 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-254.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 4.6
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-254
Affected product: Apple Mac Os X
Published: 2016-09-25
Last modified: 2026-06-17

Description

Perl in Apple OS X before 10.12 allows local users to bypass the taint-mode protection mechanism via a crafted environment variable.

Frequently asked questions

What is CVE-2016-4748?: Perl in Apple OS X before 10.12 allows local users to bypass the taint-mode protection mechanism via a crafted environment variable.
How severe is CVE-2016-4748?: CVE-2016-4748 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2016-4748 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4748?: CVE-2016-4748 affects Apple Mac Os X. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-4748?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-4748 published?: CVE-2016-4748 was published on 2016-09-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

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