CVE-2002-1071

NONECVSS 0.0Weaponized

0.0

ZyXEL Prestige 642R allows remote attackers to cause a denial of service in the Telnet, FTP, and DHCP services (crash) via a TCP packet with both the SYN and ACK flags set.

CVSS v3: —
EG Score: —
EPSS: 91.1%
KEV: Not listed

Published

October 4, 2002

Last Modified

April 16, 2026

References (10)

cve@mitrehttp://online.securityfocus.com/archive/1/277242
cve@mitrehttp://online.securityfocus.com/archive/1/277303
cve@mitrehttp://online.securityfocus.com/archive/1/277307
cve@mitrehttp://www.iss.net/security_center/static/9372.php
cve@mitrehttp://www.securityfocus.com/bid/5034
af854a3a-2127-422b-91ae-364da2661108http://online.securityfocus.com/archive/1/277242
af854a3a-2127-422b-91ae-364da2661108http://online.securityfocus.com/archive/1/277303
af854a3a-2127-422b-91ae-364da2661108http://online.securityfocus.com/archive/1/277307
af854a3a-2127-422b-91ae-364da2661108http://www.iss.net/security_center/static/9372.php
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/5034

Data Freshness Timeline

(refreshed 12× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-18 21:29 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-21561✓ verified
First seen Jul 17, 2002
ZYXEL Prestige 642R Router - Malformed Packet Denial of Service
Open source ↗

Frequently asked(4)

What is CVE-2002-1071?

CVE-2002-1071 is a none vulnerability published on October 4, 2002. ZyXEL Prestige 642R allows remote attackers to cause a denial of service in the Telnet, FTP, and DHCP services (crash) via a TCP packet with both the SYN and ACK flags set.

When was CVE-2002-1071 disclosed?

CVE-2002-1071 was first published in the National Vulnerability Database on October 4, 2002, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2002-1071 actively exploited?

CVE-2002-1071 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 91.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2002-1071?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2002-1071, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2002-1071

Explore →

Is Your Infrastructure Affected by CVE-2002-1071?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2002-1071

📅 Published

🔄 Last Modified

🔗 References (10)