CVE-2025-70821

CriticalPublic PoC

Published: 03 March 2026

Published

03 March 2026

Modified

05 March 2026

KEV Added

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Patch

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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0040 31.8th percentile

Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2025-70821 is a critical-severity SQL Injection (CWE-89) vulnerability in Renren Renren-Security. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 31.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2025-70821 is a SQL injection vulnerability (CWE-89) in the BaseServiceImpl.java component of renren-secuity prior to version v5.5.0. Published on 2026-03-03T15:16:16.290, it carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), marking it as critical due to its potential for severe impact.

An unauthenticated attacker can exploit this vulnerability remotely over the network with low attack complexity and no user interaction. Exploitation enables high-impact outcomes on confidentiality, integrity, and availability, allowing arbitrary SQL query execution that could result in data leakage, tampering, or system disruption.

Advisories reference proof-of-concept details at https://gist.github.com/sorzs/40dbc60504ab6cb0b592d9010d5ae8af, https://github.com/sorzs/test/tree/main, and https://github.com/sorzs/opencve/tree/main/CVE-2025-70821. Mitigation requires upgrading to renren-secuity v5.5.0 or later, as earlier versions remain exposed.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-208233

Vulnerability details

renren-secuity before v5.5.0 is vulnerable to SQL Injection in the BaseServiceImpl.java component

CWE(s): CWE-89

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

Why these techniques?

Direct remote unauthenticated SQL injection in a public-facing application component enables initial access via exploitation of a vulnerable public-facing app.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0