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CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2021-33056

Belledonne Belle-sip before 4.5.20, as used in Linphone and other products, can crash via an invalid From header in a SIP message.

CVSS 7.5 · HighBuzz score 16.0

Buzz score

Why this CVE is surfacing

Buzz score total 16.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 11.0 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
11.0
2 evidence mentions in the snapshot
Diversity score
5.0
1 sources across 1 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
2 source links · newest first
  • Industrial Firms Advised Not to Ignore Security Risks Posed by URL Parsing ConfusionSecurityWeek

    Researchers from industrial cybersecurity firm Claroty and developer security company Snyk have analyzed more than a dozen URL parsing libraries and showed how inconsistencies can lead to various types of vulnerabilities. Industrial organizations have been advised not to ignore these findings.

    newswww.securityweek.comJan 11, 2022, 12:27 PM
  • Vulnerability Allows Remote DoS Attacks Against Apps Using Linphone SIP StackSecurityWeek

    A serious vulnerability affecting the Linphone Session Initiation Protocol (SIP) client suite can allow malicious actors to remotely crash applications, industrial cybersecurity firm Claroty warned on Tuesday.

    newswww.securityweek.comSep 1, 2021, 10:58 AM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

Related records

Similar CVEs

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    Belledonne Belle-sip before 5.0.20 can crash applications such as Linphone via an invalid From header (request URI without a parameter) in an unauthenticated SIP message, a differ…

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