CVE-2026-121943: Irontec sngrep through 1.9.0 Out-of-Bounds Stack Read via sip_check_packet
irontec · sngrep
Affected: irontec sngrep · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 92% of scored CVEs
DescriptionCVE.org
Irontec sngrep through 1.9.0 contains an out-of-bounds stack read vulnerability in sip_check_packet and sip_validate_packet caused by an off-by-one length check on 10240-byte SIP payloads. Remote attackers can send a crafted UDP or TCP SIP packet or supply a pcap file to crash sngrep or leak adjacent stack bytes into displayed SIP fields.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- irontec · sngrepup to and including 1.9.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Possible (1 to 10%). EPSS between 1% and 10%.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- irontec
- Published
- November 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-121943 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.