What is CVE-2017-8359?

CVE-2017-8359 is a critical-severity vulnerability in Grpc, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2017-04-30.

How severe is CVE-2017-8359?

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

Buffer overflow in Grpc

CVE-2017-8359

Google gRPC before 2017-03-29 has an out-of-bounds write caused by a heap-based use-after-free related to the grpc_call_destroy function in core/lib/surface/call.c.

Vulnerability class: Buffer Overflow

Published 2017-04-30 · 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: 0.031 (87.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000

Affected products

Grpc

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

bugs.chromium.org/p/oss-fuzz/issues/detail (Exploit, Third Party Advisory)
www.securityfocus.com/bid/98280 (VDB Entry, Third Party Advisory, vdb-entry)
github.com/grpc/grpc/pull/10353 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2017-8359?: CVE-2017-8359 is a critical-severity vulnerability in Grpc, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2017-04-30.
How severe is CVE-2017-8359?: Critical severity. CVSS v3 base score is 9.8 out of 10.