Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2018-12886

CVE-2018-12886HIGH

n/a n/a — stack_protect_prologue in cfgexpand.c and stack_protect_epilogue in function.c in GNU Compiler Collection (GCC) 4.1 through 8 (under cert…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   H   N   N  U  H  H  H    8.1   .0274   85.9     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Jun 26  Reserved by mitre
  May 22  Published (CNA: mitre)
  Oct 14  ENRICHED — CVE-2018-12886. Received CVSS 8.1 and CPE data from NVD.
  Oct 14  EXPLOIT PUBLISHED — CVE-2018-12886. Public exploit reference added.

CWE-209 · CNA: mitre · CVSS v3.0 · 4 references · NVD status: Modified

Description

stack_protect_prologue in cfgexpand.c and stack_protect_epilogue in function.c in GNU Compiler Collection (GCC) 4.1 through 8 (under certain circumstances) generate instruction sequences when targeting ARM targets that spill the address of the stack protector guard, which allows an attacker to bypass the protection of -fstack-protector, -fstack-protector-all, -fstack-protector-strong, and -fstack-protector-explicit against stack overflow by controlling what the stack canary is compared against.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
June 26, 2018	Reserved	Reserved by mitre
May 22, 2019	Published	Published (CNA: mitre)
October 14, 2026	ENRICHED	ENRICHED — CVE-2018-12886. Received CVSS 8.1 and CPE data from NVD.
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2018-12886. Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-209

References (4)

https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/html/ssa-565386.html
https://gcc.gnu.org/viewcvs/gcc/trunk/gcc/config/arm/arm-protos.h?revision=266379&view=markup [Vendor Advisory]
https://www.gnu.org/software/gcc/gcc-8/changes.html [Exploit, Vendor Advisory]

Authoritative record: CVE-2018-12886 at cve.org

Weaknesses: CWE-209

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2018-12886 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.