CVE-2018-12886

Exp

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.

Published: 2019-05-22 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-12886 is rated High Exploit Risk (77.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.17%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.00% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-12886

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-12886

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.17% 2.17% +2.00%
2 2025-11-21 0.50% 0.17% -0.33%
3 2025-11-18 — 0.50% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-12886

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.0 HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2018-12886

OS Trackers for CVE-2018-12886

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2018-12886
suse low CVE-2018-12886 severity low: SUSE including 71 source package names (cpp48, cpp7, …), 456 product×package rows across 30 product lines (Magnum Orchestration 7, SLES for SAP Applications 11 SP3, … (30 product lines)): Known Not Affected 456. https://www.suse.com/security/cve/CVE-2018-12886/
ubuntu low CVE-2018-12886 low priority: Ubuntu including 12 source packages (gcc-4.8, gcc-4.9, …), 221 status rows across 19 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 89, not-affected 68, ignored 39, needs-triage 21, needed 3, released 1. https://ubuntu.com/security/CVE-2018-12886

Affected software / configurations for CVE-2018-12886

Vendor Product Version Raw CPE
gnu gcc >= 4.1, <= 8.0 cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:*

References for CVE-2018-12886

cvelogic Threat Intelligence