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CVE-2017-12380

23
FAUCET Score

CVE-2017-12380 is a Denial of Service (DoS) vulnerability affecting ClamAV AntiVirus software versions 0.99.2 and prior, as well as Debian distributions. The vulnerability stems from improper input validation in mbox.c during mail parsing, allowing an unauthenticated, remote attacker to trigger a NULL pointer dereference by sending a crafted email. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, leading to a complete loss of availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
<= 0.99.2CPE matchmatch criteria
cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.12%
Probability of exploitation in next 30 days
EPSS Percentile
91.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0512 is in the 85th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Remediation records are not available for this CVE.

References

blog.clamav.net / 2018/01/clamav-0993-has-been-released.html
Release NotesVendor Advisory
bugzilla.clamav.net / show_bug.cgi
ExploitIssue TrackingVendor Advisory
lists.debian.org / debian-lts-announce/2018/01/msg00035.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3550-1
usn.ubuntu.com / 3550-2