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CVE-2018-11781

26
FAUCET Score

CVE-2018-11781 describes a local user code injection vulnerability in Apache SpamAssassin versions prior to 3.4.2, impacting various distributions including Apache, Canonical, Debian, and Red Hat. This high-severity flaw (CVSS 7.8) allows a local, low-privileged attacker to execute arbitrary code with high impact on confidentiality, integrity, and availability, requiring no user interaction. Despite its severity, there is currently no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.4.2CPE matchmatch criteria
cpe:2.3:a:apache:spamassassin:*:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
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
0.98%
Probability of exploitation in next 30 days
EPSS Percentile
58.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0098 is in the 92nd percentile among its peer group of 16,985 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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 (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: spamassassin-0:3.4.0-4.el7_5
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: spamassassin
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: spamassassin

Vendor Advisories (1)

redhatCVE-2018-11781Moderate

spamassassin: Local user code injection in the meta rule syntax

Sep 17, 2018

References

lists.opensuse.org / opensuse-security-announce/2019-08/msg00002.html
access.redhat.com / errata/RHSA-2018:2916
Third Party Advisory
lists.apache.org / thread.html/7f6a16bc0fd0fd5e67c7fd95bd655069a2ac7d1f88e42d3c853e601c%40%3Cannounce.apache.org%3E
lists.debian.org / debian-lts-announce/2018/11/msg00016.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201812-07
Third Party Advisory
usn.ubuntu.com / 3811-1
Third Party Advisory
usn.ubuntu.com / 3811-3
Third Party Advisory