High severity · published Jun 26, 2026
CVE-2026-57918
libnfs through 6.0.2 before 935b8db has an xid integer underflow in READ_IOVEC in rpc_read_from_socket in lib/socket.c during a connection to a crafted NFS server, when the…
7.1
CVSS
0.3%
EPSS
No
On KEV
Description
libnfs through 6.0.2 before 935b8db has an xid integer underflow in READ_IOVEC in rpc_read_from_socket in lib/socket.c during a connection to a crafted NFS server, when the expected pdu size exceeds the absolute pdu size from the xid/record-marker.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
libnfs · sahlberg
before 935b8db712b3c6649bc57ddc276526c4a31680de · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57918
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-57918
github.com
https://github.com/sahlberg/libnfs/commit/935b8db712b3c6649bc57ddc276526c4a31680de
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7.1
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