CVE-2019-17571
CWE-502Published: December 20, 2019· Updated: Jun 17, 2026
Official Description
Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.
Technical Analysis
CVE-2019-17571 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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
News & Research Mentioning CVE-2019-17571
SAP has released security updates to address two critical security flaws that could be exploited to achieve arbitrary code execution on affected systems. The vulnerabilities in question listed below - CVE-2019-17571 (CVSS score: 9.8) - A code injection vulnerability in SAP Quotation Management Insurance application (FS-QUO) CVE-2026-27685 (CVSS score: 9.1) - An insecure deserialization [xlite_meta score:53 src:The Hacker News xlite_fp:5d08097eaab77c5689cf72cb1272689a269ee25261173b90492bbaa165c3bcc5]
All References (226)
Quick Facts
Related CVEs (CWE-502)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-17571 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts