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CVE-2018-20786

25
FAUCET Score

CVE-2018-20786 describes a denial-of-service vulnerability in libvterm, affecting products like Vim, due to mishandling of out-of-memory conditions. This high-severity vulnerability (CVSS 7.5) can be exploited remotely with low attack complexity, leading to an application crash. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0\+bzr726CPE matchmatch criteria
cpe:2.3:a:leonerd:libvterm:*:*:*:*:*:*:*:*

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
2.97%
Probability of exploitation in next 30 days
EPSS Percentile
85.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0297 is in the 75th percentile among its peer group of 51,485 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

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: vim

Vendor Advisories (1)

redhatCVE-2018-20786Low

libvterm: NULL pointer dereference in vterm_screen_set_callbacks

Dec 24, 2018

References

github.com / vim/vim/commit/cd929f7ba8cc5b6d6dcf35c8b34124e969fed6b8
PatchThird Party Advisory
github.com / vim/vim/issues/3711
ExploitThird Party Advisory
usn.ubuntu.com / 4309-1