HIGHPOC
CVE-2002-0540
NVD-CWE-OtherPublished: July 3, 2002· Updated: Jun 16, 2026
7.5
CVSS v3.1
Official Description
Nortel CVX 1800 is installed with a default "public" community string, which allows remote attackers to read usernames and passwords and modify the CVX configuration.
Technical Analysis
CVE-2002-0540 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A proof-of-concept (PoC) exploit exists for CVE-2002-0540. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityP
AvailabilityP
AV:N/AC:L/Au:N/C:P/I:P/A:P
Affected Vendors & Products
nortel1 product(s)
cvx 1800 multi-service access switch
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (10)
→
→
http://www.iss.net/security_center/static/8848.phpPatch · Vendor Advisory
→
http://www.kb.cert.org/vuls/id/403315US Government Resource
→
http://www.securityfocus.com/bid/4507Exploit · Patch · Vendor Advisory
→
→
http://www.iss.net/security_center/static/8848.phpPatch · Vendor Advisory
→
http://www.kb.cert.org/vuls/id/403315US Government Resource
→
http://www.securityfocus.com/bid/4507Exploit · Patch · Vendor Advisory
Quick Facts
CVE IDCVE-2002-0540
CVSS Score7.5 / 10
SeverityHIGH
WeaknessNVD-CWE-Other
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedJul 3, 2002
Related CVEs (NVD-CWE-Other)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2002-0540 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.