MEDIUM
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
Published Aug 31, 2002
5.0
MEDIUMCVSS 2.0
EPSS 3.32%
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.32% 0.03318
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.03318
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 3.32% (0.03318) | 88.20th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.32% (0.03318) | 86.96th | v5 (v2026.06.15) |
| Aug 7, 2025 | 6.38% (0.06377) | 90.62th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.95% (0.04950) | 88.66th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.69% (0.07688) | 86.23th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.95% (0.04950) | 88.92th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.46% (0.01457) | 87.24th | v3 (v2023.03.01) |
| Jan 9, 2024 | 1.46% (0.01457) | 85.29th | v3 (v2023.03.01) |
| Jun 29, 2023 | 1.77% (0.01772) | 86.32th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.96% (0.01964) | 86.90th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.48% (0.04482) | 88.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.48% (0.04482) | 87.66th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.48% (0.04482) | 71.45th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (5)
- http://online.securityfocus.com/archive/1/277242 mailing-listx_refsource_BUGTRAQ
- http://online.securityfocus.com/archive/1/277303 mailing-listx_refsource_BUGTRAQ
- http://online.securityfocus.com/archive/1/277307 mailing-listx_refsource_BUGTRAQ
- http://www.iss.net/security_center/static/9372.php vdb-entryx_refsource_XFPatchVendor Advisory
- http://www.securityfocus.com/bid/5034 vdb-entryx_refsource_BIDExploitPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://online.securityfocus.com/archive/1/277242 | mailing-listx_refsource_BUGTRAQ | |
| http://online.securityfocus.com/archive/1/277303 | mailing-listx_refsource_BUGTRAQ | |
| http://online.securityfocus.com/archive/1/277307 | mailing-listx_refsource_BUGTRAQ | |
| http://www.iss.net/security_center/static/9372.php | vdb-entryx_refsource_XFPatchVendor Advisory | |
| http://www.securityfocus.com/bid/5034 | vdb-entryx_refsource_BIDExploitPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Aug 31, 2002
Updated Aug 8, 2024
Reserved Aug 30, 2002
Link CVE-2002-1071
CISA Vulnrichment
Updated n/a