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CVE-2018-20995

30
FAUCET Score

CVE-2018-20995 is a critical memory corruption vulnerability in the Rust slice-deque crate prior to version 0.1.16, specifically within the move_head_unchecked function due to mishandled deque updates. With a CVSS score of 9.8 (CRITICAL), it allows for unauthenticated remote attackers to achieve high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.1.16CPE matchmatch criteria
cpe:2.3:a:slice-deque_project:slice-deque:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.61%
Probability of exploitation in next 30 days
EPSS Percentile
73.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0161 is in the 61st percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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 (1)

rustpatch availablevia ghsa
Product: slice-dequeFixed in: 0.1.16

Vendor Advisories (1)

rustGHSA-hr3c-6mmp-6m39critical

Memory corruption slice-deque

Aug 25, 2021

References

rustsec.org / advisories/RUSTSEC-2018-0008.html
Third Party Advisory