CVE-2026-6554: infinte loop in libpcap before 1.10.7
The Tcpdump Group · libpcap
Vendor fix available · Affected: The Tcpdump Group libpcap · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 38% of scored CVEs
DescriptionCVE.org
libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction as a signed integer to implement looping via backward jumps, but it does not limit the number of loop iterations. A crafted filter program or the 'protochain' primitive used on a crafted network packet can cause the interpreter to loop infinitely.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- The Tcpdump Group · libpcapbefore 1.10.7
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- The Tcpdump Group
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-6554 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.