How severe is CVE-2019-9536?

CVE-2019-9536 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2019-9536 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9536?

CVE-2019-9536 affects Apple Iphone 3gs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9536?

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

When was CVE-2019-9536 published?

CVE-2019-9536 was published on 2019-11-22 and last updated on 2026-06-17.

CVE-2019-9536

CVE-2019-9536 is a medium-severity vulnerability in Apple Iphone 3gs with a CVSS 3.x base score of 6.1. 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-755.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 6.9
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-755
Affected product: Apple Iphone 3gs
Published: 2019-11-22
Last modified: 2026-06-17

Description

Apple iPhone 3GS bootrom malloc implementation returns a non-NULL pointer when unable to allocate memory, aka 'alloc8'. An attacker with physical access to the device can install arbitrary firmware.

Frequently asked questions

What is CVE-2019-9536?: Apple iPhone 3GS bootrom malloc implementation returns a non-NULL pointer when unable to allocate memory, aka 'alloc8'. An attacker with physical access to the device can install arbitrary firmware.
How severe is CVE-2019-9536?: CVE-2019-9536 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2019-9536 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9536?: CVE-2019-9536 affects Apple Iphone 3gs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9536?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-9536 published?: CVE-2019-9536 was published on 2019-11-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:h:apple:iphone_3gs:-:*:*:*:*:*:*:*

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