The Telnet service for Polycom ViewStation before 7.2.4 does not restrict the number of failed login attempts, which makes it easier for rem
The Telnet service for Polycom ViewStation before 7.2.4 does not restrict the number of failed login attempts, which makes it easier for remote attackers to guess usernames and passwords via a brute force attack.
- Published
- Jan 7, 2003
- Updated
- Jun 16, 2026
- EPSS
- 2.2% · 82th percentile
- CWE
- CWE-307
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.2%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| polycom | viewstation 128 | cpe:2.3:h:polycom:viewstation_128 |
| polycom | viewstation 512 | cpe:2.3:h:polycom:viewstation_512 |
| polycom | viewstation dcp | cpe:2.3:h:polycom:viewstation_dcp |
| polycom | viewstation fx vs4000 | cpe:2.3:h:polycom:viewstation_fx_vs4000 |
| polycom | viewstation h.323 | cpe:2.3:h:polycom:viewstation_h.323 |
| polycom | viewstation mp | cpe:2.3:h:polycom:viewstation_mp |
| polycom | viewstation sp 384 | cpe:2.3:h:polycom:viewstation_sp_384 |
| polycom | viewstation v.35 | cpe:2.3:h:polycom:viewstation_v.35 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- polycom viewstation 1286.5.1
- polycom viewstation 1287.2
- polycom viewstation 5126.5.1
- polycom viewstation 5127.2
- polycom viewstation dcp6.5.1
- polycom viewstation dcp7.2
- polycom viewstation fx vs40004.1.5
- polycom viewstation h.3236.5.1
- polycom viewstation h.3237.2
- polycom viewstation mp6.5.1
- polycom viewstation mp7.2
- polycom viewstation sp 3846.5.1
- polycom viewstation sp 3847.2
- polycom viewstation v.356.5.1
- polycom viewstation v.357.2
Same product
polycom: all recordsOther highest-scoring records for the same primary product.
- CVE-2002-0626Polycom ViewStation before 7.2.4 has a default null password for the administrator account, which allows arbitrary users to conduct unauthor41Plan
- CVE-2002-0627The Web server for Polycom ViewStation before 7.2.4 allows remote attackers to bypass authentication and read files via Unicode encoded requ30Monitor
- CVE-2002-0629The Telnet service for Polycom ViewStation before 7.2.4 allows remote attackers to cause a denial of service (crash) via multiple connection20Monitor
- CVE-2002-0630The Telnet service for Polycom ViewStation before 7.2.4 allows remote attackers to cause a denial of service (crash) via long or malformed I20Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-307 · Improper Restriction of Excessive Authentication AttemptsCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Dictionary-based Password AttackCAPEC-16likelihood: Medium · High
- Password Brute ForcingCAPEC-49likelihood: Medium · High
- Use of Known Domain CredentialsCAPEC-560likelihood: High · High
- Password SprayingCAPEC-565likelihood: High · High
- Credential StuffingCAPEC-600likelihood: High · High
- Use of Known Kerberos CredentialsCAPEC-652likelihood: Medium · High
- Use of Known Operating System CredentialsCAPEC-653likelihood: High · High
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- bvlive01.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=21089
- www.ciac.org/ciac/bulletins/m-123.shtml
- www.iss.net/security_center/static/9349.php
- www.polycom.com/common/pw_item_show_doc/0%2C%2C1444%2C00.pdf
- www.securityfocus.com/bid/5635
- exchange.xforce.ibmcloud.com/vulnerabilities/44241
Vendor advisories and official records. Exploit/PoC links are deliberately left out.