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CVE-2018-12495

19
FAUCET Score

CVE-2018-12495 is a heap-based buffer over-read vulnerability in the quoteblock function of libmarkdown.a in DISCOUNT 2.2.3a, affecting various Debian and Discount Project products. This flaw allows remote attackers to trigger a denial of service through a crafted file. Rated 5.5 (Medium) on the CVSS scale, it requires user interaction (UI:R) and local access (AV:L) to exploit, leading to high availability impact (A:H). There is no evidence of active exploitation, public exploit code, or significant community discussion, indicating a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
2.2.3CPE matchmatch criteria
cpe:2.3:a:discount_project:discount:2.2.3:a:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.79%
Probability of exploitation in next 30 days
EPSS Percentile
76.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0179 is in the 86th percentile among its peer group of 5,758 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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 Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: discount

Vendor Advisories (1)

redhatCVE-2018-12495Low

discount: heap-based buffer over-read via a crafted file

May 23, 2018

References

github.com / Orc/discount/issues/189
ExploitThird Party Advisory
lists.debian.org / debian-lts-announce/2018/09/msg00009.html
Mailing ListThird Party Advisory
debian.org / security/2018/dsa-4293
Third Party Advisory