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CVE-2021-45702

25
FAUCET Score

CVE-2021-45702 is a use-after-free vulnerability in the tremor-script crate for Rust, affecting versions prior to 0.11.6. This flaw, rated 7.5 HIGH, allows an unauthenticated attacker to remotely trigger a denial of service through a merge operation, requiring no user interaction. There is no evidence of active exploitation, nor are there any public exploit codes or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.7.2, < 0.11.6CPE matchmatch criteria
cpe:2.3:a:linuxfoundation:tremor-script:*:*:*:*:*: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: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
3.1

Exploit Intelligence

EPSS Score
1.05%
Probability of exploitation in next 30 days
EPSS Percentile
60.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0105 is in the 38th 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 (1)

rustpatch availablevia ghsa
Product: tremor-scriptFixed in: 0.11.6

Vendor Advisories (1)

rustGHSA-9qvw-46gf-4fv8high

Use After Free in tremor-script

Jan 6, 2022

References

raw.githubusercontent.com / rustsec/advisory-db/main/crates/tremor-script/RUSTSEC-2021-0111.md
Third Party Advisory
rustsec.org / advisories/RUSTSEC-2021-0111.html
Third Party Advisory