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Medium 5.3Published Sep 23, 2026
CVE-2026-88840Busybox: busybox: tls ssl_server reads one byte out of bounds when parsing truncated clienthello
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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BusyBox TLS get_client_hello() reads past the end of the input buffer when parsing a truncated ClientHello message.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 26, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat Hardened Images redhat:hummingbird | 1 | CNA record |
References
- https://access.redhat.com/security/cve/CVE-2026-88840vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2531354issue-tracking, x-refsource-redhat
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.