- Description
- A buffer overflow was addressed with improved bounds checking. This issue is fixed in Xcode 26.1. A user in a privileged network position may be able to cause a denial-of-service.
- Source
- product-security@apple.com
- NVD status
- Analyzed
- Products
- xcode
CVSS 3.1
- Type
- Secondary
- Base score
- 4.9
- Impact score
- 3.6
- Exploitability score
- 1.2
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- Severity
- MEDIUM
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
- CWE-119
- Hype score
- Not currently trending
⚠️ CVE-2025-43504 - LLDB debugserver Remote Pre-Auth Overflow Apple's LLDB debugger has heap overflow in debugserver component allowing remote code execution without authentication. Attackers craft malicious GDB Remote Serial Protocol packets to trigger buffer overflow and
@the_c_protocol
9 Dec 2025
41 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
🔥 New (guest) blog just dropped! “When Good /bins Go Bad: A Remote Pre-Auth Overflow in LLDB’s debugserver” https://t.co/GtQJuWseLO Mahalo to Nathan (@calysteon) for detailing his discovery of this bug, which has since been patched by Apple as CVE-2025-43504 🙏🏽
@objective_see
8 Dec 2025
3712 Impressions
11 Retweets
46 Likes
14 Bookmarks
0 Replies
0 Quotes
[
{
"nodes": [
{
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{
"criteria": "cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*",
"matchCriteriaId": "AFE80301-44C1-41B8-B3CE-058B8536D964",
"versionEndExcluding": "26.1",
"vulnerable": true
}
],
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"operator": "OR"
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]
}
]