Apple iPhone 3GS bootrom malloc implementation returns a non-NULL pointer when unable to allocate memory, aka 'alloc8'
Published Nov 22, 2019
6.8
MEDIUMCVSS 3.1
EPSS 0.49%
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.
Affected products
-
- Version 3GSStatusaffectedConstraints-
- Version
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (CVE.org) ▾
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.49% (0.00486) | 39.62th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.49% (0.00486) | 40.93th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.10% (0.00100) | 41.76th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.10% (0.00100) | 40.51th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00083) | 33.51th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.40% (0.01404) | 49.02th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.41% (0.00410) | 3.56th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.09% (0.00092) | 0.00th | v1 |
References (2)
- https://github.com/axi0mX/alloc8 x_refsource_MISCExploitThird Party Advisory
- https://github.com/axi0mX/ipwndfu/blob/master/alloc8.py x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/axi0mX/alloc8 | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/axi0mX/ipwndfu/blob/master/alloc8.py | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.