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CVE-2002-1071
ZyXEL Prestige 642R allows remote attackers to cause a denial of service in the Telnet, FTP, and DHCP services (crash) via a TCP packet…
Medium5.0EPSS 3.3%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 3.3% · top 11% of all CVEs (2 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (5)
- 20020617 Re: ZyXEL 642R(-11) AJ.6 SYN-ACK, SYN-FIN DoS -- 643R testing (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- zyxel-tcp-packet-dos(9372) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 5034 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20020617 ZyXEL 642R(-11) AJ.6 SYN-ACK, SYN-FIN DoS (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20020617 Follow: ZyXEL 642R-11 AJ.6 service DoS -- additional informations (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .