VulnerabilityModified
CVE-2023-25135
vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code via a crafted HTTP request that triggers deserialization.
CRITICAL 9.8EPSS 23.9%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 23.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
vBulletin before 5.6.9 PL1 allows an unauthenticated remote attacker to execute arbitrary code via a crafted HTTP request that triggers deserialization. This occurs because verify_serialized checks that a value is serialized by calling unserialize and then checking for errors. The fixed versions are 5.6.7 PL1, 5.6.8 PL1, and 5.6.9 PL1.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 23.93% probability · 98th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- vbulletin/vbulletin
- Source
- cve@mitre.org
References
- https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patchRelease Notes, Vendor Advisory
- https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachableExploit, Technical Description, Third Party Advisory
- https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4473890-vbulletin-5-6-9-security-patchRelease Notes, Vendor Advisory
- https://www.ambionics.io/blog/vbulletin-unserializable-but-unreachableExploit, Technical Description, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.