CVE-2018-17157
In FreeBSD before 11.2-STABLE(r340854) and 11.2-RELEASE-p5, an integer overflow error when handling opcodes can cause memory corruption by sending a specially crafted NFSv4 request.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 24.2%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
In FreeBSD before 11.2-STABLE(r340854) and 11.2-RELEASE-p5, an integer overflow error when handling opcodes can cause memory corruption by sending a specially crafted NFSv4 request. Unprivileged remote users with access to the NFS server may be able to execute arbitrary code.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 24.17% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- freebsd/freebsd
- Source
- secteam@freebsd.org
EPSS moved from 20.6% on 21 September 2026 to 24.2% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/106192Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1042164Patch, Third Party Advisory, VDB Entry
- https://secuniaresearch.flexerasoftware.com/secunia_research/2018-25/Third Party Advisory
- https://security.freebsd.org/advisories/FreeBSD-SA-18:13.nfs.ascPatch, Vendor Advisory
- http://www.securityfocus.com/bid/106192Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1042164Patch, Third Party Advisory, VDB Entry
- https://secuniaresearch.flexerasoftware.com/secunia_research/2018-25/Third Party Advisory
- https://security.freebsd.org/advisories/FreeBSD-SA-18:13.nfs.ascPatch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.