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CVE-2019-9536

22
FAUCET Score

CVE-2019-9536, known as 'alloc8', is a bootrom vulnerability affecting the Apple iPhone 3GS. It stems from a flawed memory allocation implementation that returns a non-NULL pointer even when memory allocation fails. This vulnerability has a CVSS score of 6.8 (Medium) and requires physical access to the device (AV:P), allowing an attacker to install arbitrary firmware, leading to high impact on confidentiality, integrity, and availability. Despite its potential for complete device compromise, there is no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:h:apple:iphone_3gs:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
0.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 76th percentile among its peer group of 1,531 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / axi0mX/alloc8
ExploitThird Party Advisory
github.com / axi0mX/ipwndfu/blob/master/alloc8.py
Third Party Advisory