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CVE-2018-12034

23
FAUCET Score

CVE-2018-12034 is an out-of-bounds read vulnerability affecting YARA versions 3.7.1 and prior, specifically within the yr_execute_code function when parsing a specially crafted compiled rule file. With a CVSS score of 7.8 (High), this vulnerability could lead to high confidentiality, integrity, and availability impacts if a user is tricked into opening a malicious file. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.7.1CPE matchmatch criteria
cpe:2.3:a:virustotal:yara:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.24%
Probability of exploitation in next 30 days
EPSS Percentile
66.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0124 is in the 63rd percentile among its peer group of 11,621 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

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
ubuntupatch availablevia ubuntu_usn
Product: yara (bionic)Fixed in: 3.7.1-1ubuntu2+esm1
ubuntupatch availablevia ubuntu_usn
Product: yara (focal)Fixed in: 3.9.0-1ubuntu0.1~esm1
ubuntupatch availablevia ubuntu_usn
Product: yara (xenial)Fixed in: 3.4.0+dfsg-2ubuntu0.1~esm1

Vendor Advisories (1)

ubuntuUSN-8080-1

YARA vulnerabilities

Mar 9, 2026

References

bnbdr.github.io / posts/swisscheese
ExploitThird Party Advisory
github.com / bnbdr/swisscheese
ExploitThird Party Advisory
github.com / VirusTotal/yara/issues/891
Issue TrackingPatchThird Party Advisory