CVE-2026-42512HIGH 8.1EPSS p69.4%
CVE-2026-42512CVE-2026-42512
Description
As dhclient is building an environment to pass to dhclient-script, it may need to resize the array of string pointers. The code which expands the array incorrectly calculates its new size when requesting memory, resulting in a heap buffer overrun.
A specially crafted packet can cause dhclient to overrun its buffer of environment entries. This can result in a crash, but it may be possible to leverage this bug to achieve remote code execution.
Scoring
| CVSS 3.1 | 8.1 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 1.42% probability of exploitation · percentile 69.4% · 2026-06-18T12:00:27Z |
| Published | 2026-04-30 |
| Last modified | 2026-05-01 |
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Heap-based Buffer Overflowcwe-122 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.