VulnerabilityModified
CVE-2020-3923
Attackers can crack the default password and gain access to the system.
CRITICAL 9.8EPSS 1.68%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.68%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
DVR firmware in TAT-76 and TAT-77 series of products, provided by TONNET, contain misconfigured authentication mechanism. Attackers can crack the default password and gain access to the system.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.68% probability · 77th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- tonnet/tat-77104g1 firmware · tonnet/tat-70432n firmware · tonnet/tat-71416g1 firmware · tonnet/tat-71832g1 firmware · tonnet/tat-76104g3 firmware · tonnet/tat-76108g3 firmware · tonnet/tat-76116g3 firmware · tonnet/tat-76132g3 firmware
- Source
- twcert@cert.org.tw
EPSS 1.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://tvn.twcert.org.tw/taiwanvn/TVN-201910003Third Party Advisory
- https://www.chtsecurity.com/news/4ef5eb3a-fdc3-4d78-8dd7-ec7213e2bbcfThird Party Advisory
- https://tvn.twcert.org.tw/taiwanvn/TVN-201910003Third Party Advisory
- https://www.chtsecurity.com/news/4ef5eb3a-fdc3-4d78-8dd7-ec7213e2bbcfThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.