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CVE-2018-12886

28
FAUCET Score

CVE-2018-12886 is a high-severity vulnerability affecting GNU Compiler Collection (GCC) versions 4.1 through 8 when targeting ARM architectures. It allows an attacker to bypass stack overflow protections (like -fstack-protector) by manipulating the stack canary comparison during compilation. The CVSS score of 8.1 reflects a network-based attack with high impact on confidentiality, integrity, and availability, though it requires high attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.1, <= 8.0CPE matchmatch criteria
cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.17%
Probability of exploitation in next 30 days
EPSS Percentile
80.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0217 is in the 37th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2018-12886Moderate

gcc: spilling of stack protection address in cfgexpand.c and function.c leads to stack-overflow protection bypass

May 22, 2019

References

gcc.gnu.org / viewcvs/gcc/trunk/gcc/config/arm/arm-protos.h
Vendor Advisory
gnu.org / software/gcc/gcc-8/changes.html
ExploitVendor Advisory