HIGH
CVE-2023-39733
NVD-CWE-noinfoPublished: October 25, 2023· Updated: Jun 17, 2026
8.2
CVSS v3.1
Official Description
The leakage of the client secret in TonTon-Tei Line v13.6.1 allows attackers to obtain the channel access token and send crafted broadcast messages.
Technical Analysis
CVE-2023-39733 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 8.2.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Affected Vendors & Products
linecorp1 product(s)
tonton-tei
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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GitHub PoC Search
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Rapid7 / Metasploit
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PacketStorm
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NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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All References (4)
Quick Facts
CVE IDCVE-2023-39733
CVSS Score8.2 / 10
SeverityHIGH
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedOct 25, 2023
Related CVEs (NVD-CWE-noinfo)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-39733 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.