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CVE-2003-1115

21
FAUCET Score

CVE-2003-1115 describes a denial-of-service and potential arbitrary code execution vulnerability in Nortel Networks Succession Communication Server 2000's SIP implementation when using SIP-T. Crafted INVITE messages can trigger this flaw, as demonstrated by the OUSPG PROTOS c07-sip test suite. The vulnerability carries a CVSS score of 7.5, indicating a high severity with network-based attacks, low complexity, and potential for partial confidentiality, integrity, and availability impact. While the EPSS score is low, suggesting limited current exploitability, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:h:nortel:succession_communication_server_2000:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:h:nortel:succession_communication_server_2000:*:*:compact:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.68%
Probability of exploitation in next 30 days
EPSS Percentile
90.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0468 is in the 84th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/11379
cert.org / advisories/CA-2003-06.html
Third Party AdvisoryUS Government Resource
ee.oulu.fi / research/ouspg/protos/testing/c07/sip
Exploit
kb.cert.org / vuls/id/528719
Third Party AdvisoryUS Government Resource
securityfocus.com / bid/6904
Patch