Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses predictable sequence numbers, which allows remote attackers to hijack sessions via sniffing or brute force attacks
Published Mar 31, 2009
7.6
HIGHCVSS 2.0
EPSS 2.24%
Description
Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses predictable sequence numbers, which allows remote attackers to hijack sessions via sniffing or brute force attacks.
Affected products
No data.
- n/a
- n/a
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:H/Au:N/C:C/I:C/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 3, 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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 2.24% (0.02244) | 82.27th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.24% (0.02244) | 80.52th | v5 (v2026.06.15) |
| Mar 17, 2025 | 2.17% (0.02173) | 83.17th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.55% (0.01549) | 87.67th | v3 (v2023.03.01) |
| May 7, 2024 | 1.55% (0.01549) | 87.08th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.55% (0.01549) | 85.08th | 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 (7)
- http://osvdb.org/44379 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/29747 third-party-advisoryx_refsource_SECUNIA
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=713455 x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/bid/28691 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1019847 vdb-entryx_refsource_SECTRACK
- http://www.voipshield.com/research-details.php?id=27&s=4&threats_details=&threats_category=0&threats_vendor=0&limit=20&sort=discovered&sortby=DESC x_refsource_MISC
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41801 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/44379 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/29747 | third-party-advisoryx_refsource_SECUNIA | |
| http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=713455 | x_refsource_CONFIRMVendor Advisory | |
| http://www.securityfocus.com/bid/28691 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1019847 | vdb-entryx_refsource_SECTRACK | |
| http://www.voipshield.com/research-details.php?id=27&s=4&threats_details=&threats_category=0&threats_vendor=0&limit=20&sort=discovered&sortby=DESC | x_refsource_MISC | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/41801 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.