What is CVE-2017-11757?

CVE-2017-11757 is a critical-severity vulnerability in Actian Pervasive Psql, classified under Integer Underflow. CVSS score: 9.8/10. Published 2017-07-31.

How severe is CVE-2017-11757?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Integer overflow in Actian Pervasive Psql

CVE-2017-11757

Heap-based buffer overflow in Actian Pervasive PSQL v12.10 and Zen v13 allows remote attackers to execute arbitrary code via crafted traffic to TCP port 1583. The overflow occurs after Server-Client encryption-key exchange. The issue results from an integer underflow that leads to a zero-byte allocation. The _srvLnaConnectMP1 function is affected.

Published 2017-07-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.025 (84.1th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000

Affected products

Actian Pervasive Psql — versions 12.10
Actian Zen — versions 13.0

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

supportservices.actian.com/support-services/security-center (Vendor Advisory)
twitter.com/SecuriTeam_SSD/status/815567538318954496 (Third Party Advisory)
blogs.securiteam.com/index.php/archives/2924 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2017-11757?: CVE-2017-11757 is a critical-severity vulnerability in Actian Pervasive Psql, classified under Integer Underflow. CVSS score: 9.8/10. Published 2017-07-31.
How severe is CVE-2017-11757?: Critical severity. CVSS v3 base score is 9.8 out of 10.