CVE-2019-18224Critical· 9.8▾ Midnightidn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.7 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Oct 14.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
3.7%
idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.
libidn2 < 2.1.1Upgrade past the affected range:
libidn2 2.1.1Connected by shared product, vendor, weakness, or advisory.
CVE-2019-12290High· 7.5GNU libidn2 before 2.2.0 fails to perform the roundtrip checks specified in RFC3490 Section 4.2 when converting A-labels to U-labels
CVE-2026-56392Medium· 6.1GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop (-t) values
CVE-2021-3968High· 8.0vim is vulnerable to Heap-based Buffer Overflow
CVE-2026-90831Medium· 5.3A vulnerability was detected in GNU Binutils 2.47
CVE-2024-0684Medium· 5.5A flaw was found in the GNU coreutils "split" program
CVE-2023-39128Medium· 5.5GNU gdb (GDB) 13.0.50.20220805-git was discovered to contain a stack overflow via the function ada_decode at /gdb/ada-lang.c.