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CVE-2018-25023

25
FAUCET Score

CVE-2018-25023 is a high-severity vulnerability in the smallvec crate (versions prior to 0.6.13) for Rust, which also affects the Servo project. This flaw allows for the creation of uninitialized values of any type, including reference types, potentially leading to memory corruption or other undefined behavior. With a CVSS score of 7.5, it is network-exploitable with low attack complexity, posing a high impact to integrity without requiring user interaction. Despite its severity, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.6.13CPE matchmatch criteria
cpe:2.3:a:servo:smallvec:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.39%
Probability of exploitation in next 30 days
EPSS Percentile
69.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0139 is in the 50th percentile among its peer group of 51,466 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 (1)

rustpatch availablevia ghsa
Product: smallvecFixed in: 0.6.13

Vendor Advisories (1)

rustGHSA-55m5-whcv-c49chigh

Use of Uninitialized Resource in smallvec

Jan 6, 2022

References

github.com / servo/rust-smallvec/commit/e64afc8c473d43e375ab42bd33db2d0d4ac4e41b
raw.githubusercontent.com / rustsec/advisory-db/main/crates/smallvec/RUSTSEC-2018-0018.md
Third Party Advisory
rustsec.org / advisories/RUSTSEC-2018-0018.html
ExploitIssue TrackingThird Party Advisory