CVE-2026-82895 is a high severity (8.1) buffer overflow in IBM Guardium Data Protection 12.0, 12.1 and 12.2. A remote attacker could potentially execute arbitrary code. IBM's public text gives few details beyond that. The fix is the latest Guardium Sniffer patch named in IBM bulletin 7291674, and no workaround is listed.
What's affected
IBM's bulletin 7291674 lists IBM Guardium Data Protection 12.0, 12.1 and 12.2, in the Sniffer component on Linux. IBM's remediation for all affected versions is the latest Guardium Sniffer patch, named SqlGuard_12.0p4018_SnifferUpdate in the bulletin. IBM lists no workarounds or mitigations.
The bulletin was published on 8 October 2026. One bulletin covers several CVEs, so one patch addresses the whole set.
How to check if you're exposed
Check each Guardium collector and aggregator for the installed patch level using your normal Guardium administration process, and compare it to the sniffer patch named in the bulletin. The bulletin is the authority for patch names, so read it before you start.
Also review where collectors sit. The record describes a remote attacker who can send crafted traffic that a collector inspects, so a collector that monitors untrusted or shared network segments carries the most exposure.
What to do now
- List every Guardium collector, aggregator and any other node running the Sniffer component on 12.0, 12.1 or 12.2.
- Apply the latest Guardium Sniffer patch named in IBM bulletin 7291674, testing it first on a non-production collector if you have one.
- Review which network segments feed your collectors, and limit untrusted traffic where you can.
- Confirm the patch level on every node afterwards.
- Watch the collector for crashes or restarts before and after patching, since parser flaws often show up that way.
Why it matters
The weakness is CWE-120, a classic buffer copy without checking the size of the input. IBM does not say which parser or field is involved in this record, so this post does not guess.
The score reflects network reachability with high attack complexity and high impact on confidentiality, integrity and availability. The record is not flagged in CISA's KEV catalog. Because this bulletin groups it with other collector flaws, apply the whole patch and treat the group as one job.
Quick check
Why is this post short on technical detail?
IBM's description for this record is brief. This guide only states what the record and the bulletin confirm.
Sources
Last reviewed: 19 October 2026.
