The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server
Published Oct 23, 2007
7.1
HIGHCVSS 2.0
EPSS 1.79%
Description
The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.
Affected products
No data.
Running on/with
- n/a
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No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
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.
AV:N/AC:M/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 1, 2026 | 1.79% (0.01790) | 77.56th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.79% (0.01790) | 75.42th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.05% (0.01052) | 76.03th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.82% (0.01824) | 88.70th | v3 (v2023.03.01) |
| Jul 19, 2024 | 2.05% (0.02048) | 89.14th | v3 (v2023.03.01) |
| Jun 11, 2024 | 2.15% (0.02146) | 89.28th | v3 (v2023.03.01) |
| May 4, 2024 | 1.94% (0.01938) | 88.59th | v3 (v2023.03.01) |
| Oct 29, 2023 | 2.02% (0.02020) | 87.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.87% (0.01869) | 86.52th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
No CWE recorded.
References (6)
- http://securityreason.com/securityalert/3273 third-party-advisoryx_refsource_SREASON
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=654715 x_refsource_CONFIRMPatch
- http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt x_refsource_MISCExploit
- http://www.securityfocus.com/archive/1/482480/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/26122 vdb-entryx_refsource_BIDPatch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/37253 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://securityreason.com/securityalert/3273 | third-party-advisoryx_refsource_SREASON | |
| http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=654715 | x_refsource_CONFIRMPatch | |
| http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt | x_refsource_MISCExploit | |
| http://www.securityfocus.com/archive/1/482480/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/26122 | vdb-entryx_refsource_BIDPatch | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/37253 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.