MEDIUM
Cisco IOS 11.1 through 12.2, when HSRP support is not enabled, allows remote attackers to cause a denial of service (CPU consumption) via randomly sized UDP packets to the Hot Standby Routing Protocol (HSRP) port 1985
Published Jun 21, 2005
5.0
MEDIUMCVSS 2.0
EPSS 1.59%
Description
Cisco IOS 11.1 through 12.2, when HSRP support is not enabled, allows remote attackers to cause a denial of service (CPU consumption) via randomly sized UDP packets to the Hot Standby Routing Protocol (HSRP) port 1985.
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.
1.59% 0.01591
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01591
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.59% (0.01591) | 74.78th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.59% (0.01591) | 72.42th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.76% (0.00763) | 71.68th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.97% (0.00972) | 84.04th | v3 (v2023.03.01) |
| May 28, 2024 | 0.97% (0.00972) | 83.35th | v3 (v2023.03.01) |
| Apr 4, 2024 | 1.06% (0.01057) | 83.79th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.06% (0.01057) | 81.78th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (4)
- http://archives.neohapsis.com/archives/bugtraq/2002-06/0027.html mailing-listx_refsource_BUGTRAQ
- http://archives.neohapsis.com/archives/bugtraq/2002-06/0050.html mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/4948 vdb-entryx_refsource_BID
- https://exchange.xforce.ibmcloud.com/vulnerabilities/9282 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://archives.neohapsis.com/archives/bugtraq/2002-06/0027.html | mailing-listx_refsource_BUGTRAQ | |
| http://archives.neohapsis.com/archives/bugtraq/2002-06/0050.html | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/4948 | vdb-entryx_refsource_BID | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/9282 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 21, 2005
Updated Aug 8, 2024
Reserved Jun 21, 2005
Link CVE-2002-1768
CISA Vulnrichment
Updated n/a