CVE-2026-35547Heap overflow in libnv
Updated under an hour ago ()
This data is behind schedule: last updated Oct 26, 2026, 12:20 PM ET. We are working on it.Behind: CVE records (cvelistV5).
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It affects FreeBSD. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
When processing the header of an incoming message, libnv failed to properly validate the message size. The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.
- CVSS
- 8.1 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-122, CWE-130
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- freebsd
- NVD analysis
- Modified
- Record last updated
- May 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
FreeBSD FreeBSD freebsd:freebsd (from the name) | from 15.0-RELEASE before p7; from 14.4-RELEASE before p3; from 14.3-RELEASE before p12; from 13.5-RELEASE before p13 | CNA record |
freebsd freebsd freebsd:freebsd | 13.5; 13.5; 13.5; 13.5; 13.5; 13.5; 13.5; 13.5; and 29 more ranges | NVD |
References
- https://security.freebsd.org/advisories/FreeBSD-SA-26:17.libnv.ascvendor-advisory
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.