Out-of-bounds read in nfdump - #VU142737
Published: August 15, 2026
Vulnerability identifier: #VU142737
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-125
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 out-of-bounds read in AddNbarRecord() and InsertNbarAppInfo() in src/nfdump/nbar.c when parsing a crafted nfcapd file with nfdump -r. A remote attacker can trick the victim into opening a crafted file to cause a denial of service.
User interaction is required to open the crafted file.
Affected software
nfdump
Remediation
Install security update from vendor's website.
nfdump - update to 1.7.9