In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the TCP dissector could crash. This was addressed in epan/dissectors/packet-tcp.c by changing the handling of the invalid 0xFFFF checksum.
{
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING",
"vendor_product": "debian:debian_linux"
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "31"
},
{
"last_affected": "31"
},
{
"introduced": "32"
},
{
"last_affected": "32"
},
{
"introduced": "33"
},
{
"last_affected": "33"
}
],
"source": "CPE_STRING",
"vendor_product": "fedoraproject:fedora"
},
{
"cpes": [
"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
"cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "15.1"
},
{
"last_affected": "15.1"
},
{
"introduced": "15.2"
},
{
"last_affected": "15.2"
}
],
"source": "CPE_STRING",
"vendor_product": "opensuse:leap"
},
{
"cpes": [
"cpe:2.3:o:oracle:zfs_storage_appliance_firmware:8.8:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "8.8"
},
{
"last_affected": "8.8"
}
],
"source": "CPE_STRING",
"vendor_product": "oracle:zfs_storage_appliance_firmware"
}
]
}{
"cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "2.6.0"
},
{
"last_affected": "2.6.20"
},
{
"introduced": "3.0.0"
},
{
"last_affected": "3.0.13"
},
{
"introduced": "3.2.0"
},
{
"last_affected": "3.2.6"
}
],
"source": "CPE_RANGE"
}
{
"cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "2.6.0"
},
{
"last_affected": "2.6.20"
},
{
"introduced": "3.0.0"
},
{
"last_affected": "3.0.13"
},
{
"introduced": "3.2.0"
},
{
"last_affected": "3.2.6"
}
],
"source": [
"CPE_RANGE",
"REFERENCES"
]
}
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-25862.json"
[
{
"deprecated": false,
"digest": {
"line_hashes": [
"242302087000154554284775128768973085051",
"185008706844172963313874610184916204300",
"294017873334335896332854535638490301366",
"184037773829120508062932782996856580214"
],
"threshold": 0.9
},
"id": "CVE-2020-25862-7975778d",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://gitlab.com/wireshark/wireshark@7f3fe6164a68b76d9988c4253b24d43f498f1753",
"target": {
"file": "epan/dissectors/packet-tcp.c"
}
}
]
"2026-07-08T16:28:23Z"