Spring’s Dangerous RCE 0‑Day: Why Java 8 Is Safe and How to Stay Protected
This article reveals a newly disclosed Spring framework RCE 0‑day vulnerability caused by unsafe Java serialization, rates it as dangerous, explains why Java 8 remains unaffected, and warns developers against indiscriminate JDK upgrades while comparing it to the Log4j2 incident.
While searching for a technical "gossip" to discuss, the author discovered that the Spring framework has a newly disclosed remote code execution (RCE) 0‑day vulnerability.
The issue, identified as RCE 0 Day #28248, stems from unsafe deserialization using SerializationUtils#deserialize, a Java serialization mechanism.
Security media FreeBuf rates the vulnerability as dangerous . However, the fix is straightforward: any JDK version less than or equal to 8 is not affected.
The author verified this on a server by running java -version, confirming that using Java 8 avoids the exploit.
Compared to the high‑profile Log4j2 vulnerability, this Spring issue is less severe, but it still serves as a reminder not to upgrade JDK versions indiscriminately.
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