CVE-2019-5434
highpriority · attend · 69EPSS 0.570 · 99 %ileexploit · PoCEUUSEPSS · scored 2026-10-27
An attacker could send a specifically crafted payload to the XML-RPC invocation script and trigger the unserialize() call on the "what" parameter in the "openads.spc" RPC method. Such vulnerability could be used to perform various types of attacks, e.g. exploit serialize-related PHP vulnerabilities or PHP object injection. It is possible, although unconfirmed, that the vulnerability has been used by some attackers in order to gain access to some Revive Adserver instances and deliver malware through them to third party websites. This vulnerability was addressed in version 4.2.0.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- EDB-47739Revive Adserver 4.2 - Remote Code ExecutionPoC · exploit_db
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (14)
External citations — patches, advisories, analysis.
- https://hackerone.com/reports/512076cnnvd
- https://hackerone.com/reports/542670cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-5434cnnvd
- https://packetstormsecurity.com/files/155559/Revive-Adserver-4.2-Remote-Code-Execution.htmlcnnvd
- https://www.exploit-db.com/exploits/47739cnnvd
- https://www.revive-adserver.com/security/revive-sa-2019-001/cnnvd
- http://packetstormsecurity.com/files/155559/Revive-Adserver-4.2-Remote-Code-Execution.htmlenisa_euvd
- https://hackerone.com/reports/512076enisa_euvd
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