Remote denial of service in PostgreSQL



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-4207
CWE-ID CWE-126
Exploitation vector Network
Public exploit N/A
Vulnerable software
 PostgreSQL
Server applications / Database software

Vendor PostgreSQL Global Development Group

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Buffer Over-read

EUVDB-ID: #VU108834

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-4207

CWE-ID: CWE-126 - Buffer over-read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a buffer over-read in GB18030 encoding validation. A remote attacker can pass specially crafted input to the application, trigger a one-byte buffer over-read and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PostgreSQL: 13.0 - 17.4

CPE2.3 External links

https://www.postgresql.org/support/security/CVE-2025-4207/
https://www.postgresql.org/about/news/postgresql-175-169-1513-1418-and-1321-released-3072/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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