Infinite loop in nfdump - #VU142747
Published: August 15, 2026
Vulnerability identifier: #VU142747
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a loop with an unreachable exit condition in ReadAppendix() in src/libnffile/nffile.c when parsing a crafted nfcapd file. A remote attacker can trick the victim into opening a crafted file to cause a denial of service.
User interaction is required to open a crafted file with nfdump -r.
Affected software
nfdump
Remediation
Install security update from vendor's website.
nfdump - update to 1.7.9