Critical
Security advisory
The Cisco HDLC parser in tcpdump before 4.9.2 has a buffer over-read in print-chdlc.c:chdlc_print().
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-13687
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:00 UTC · Revision 1
Source evidence
The Cisco HDLC parser in tcpdump before 4.9.2 has a buffer over-read in print-chdlc.c:chdlc_print().
osv:CVE-2017-13687
Complete source record
{
"id": "836cd3154a3c51c8cba70b8ed8b3691831277ed09d0ba6fb51e8db718b42d567",
"url": "https://osv.dev/vulnerability/CVE-2017-13687",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-13687",
"summary": "The Cisco HDLC parser in tcpdump before 4.9.2 has a buffer over-read in print-chdlc.c:chdlc_print().",
"evidence": "osv:CVE-2017-13687",
"products": [],
"severity": "critical",
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"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
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"affected": [
{
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"repo": "https://github.com/the-tcpdump-group/tcpdump",
"type": "GIT",
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{
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{
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],
"versions": [
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"tcpdump-4.9.0",
"tcpdump-4.9.0-bp",
"tcpdump-4.7.0-bp",
"tcpdump-4.6.0-bp",
"tcpdump-4.6.0",
"tcpdump-4.5.0",
"tcpdump-3.8-bp",
"tcpdump-3.7.1",
"tcpdump-3.6.1",
"tcpdump-3.5.1"
],
"database_specific": {
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"source": "https://github.com/the-tcpdump-group/tcpdump/commit/a1eefe986065846b6c69dbc09afd9fa1a02c4a3d",
"target": {
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"function": "chdlc_print"
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"modified": "2026-10-24T14:03:16.017626030Z",
"provider": "osv",
"references": [
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"https://security.gentoo.org/glsa/201709-23",
"https://support.apple.com/HT208221",
"https://github.com/the-tcpdump-group/tcpdump/commit/866c60236c41cea1e1654c8a071897292f64be49",
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{
"cpes": [
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"related_cves": [
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"evidence": "/id"
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"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 442776,
"published_at": "2017-09-14T06:29:03.297+00:00"
}