CVE-2026-111441 openGauss-server - Buffer Overflow

openGauss-server 2.1.0 to 7.0.0-RC3 contains a buffer overflow caused by improper length validation in HllObjectUnpack() during packed HLL unpacking, letting authenticated database users trigger heap overflow via malformed packed HLL input.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.40% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Published
19 October 2026
Updated
20 October 2026
Weakness
CWE-122

Vendor fix

Update to openGauss-server 7.0.0-LTS or later where length validation and buffer copy are fixed.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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