High severity · published Feb 11, 2026
CVE-2020-37104
ASTPP 4.0.1 VoIP Billing - Database Backup Download
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
ASTPP 4.0.1 contains an information disclosure vulnerability that allows unauthenticated attackers to download database backup files by predicting backup filename patterns. Attackers can generate a list of 6-digit PIN combinations and fuzz the backup download URL to exfiltrate sensitive database information from the /database_backup/ directory.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
ASTPP · ASTPP
4.0.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-37104
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-37104
Product
https://github.com/iNextrix/ASTPP
Product
https://www.astppbilling.org/
Exploit
https://www.exploit-db.com/exploits/47900
Third Party Advisory
https://www.vulncheck.com/advisories/astpp-voip-billing-database-backup-download
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ASTPP VoIP 4.0.1 - Remote Code Execution