What is CVE-2020-35962?

CVE-2020-35962 is a high-severity vulnerability in Loopring. CVSS score: 7.5/10. Published 2021-01-03.

How severe is CVE-2020-35962?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Loopring

CVE-2020-35962

The sellTokenForLRC function in the vault protocol in the smart contract implementation for Loopring (LRC), an Ethereum token, lacks access control for fee swapping and thus allows price manipulation.

Published 2021-01-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.014 (70.6th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.014 · change: +0.000

Affected products

Loopring

References

blocksecteam.medium.com/loopring-lrc-protocol-incident-66e9470bd51f (Exploit, Third Party Advisory)
etherscan.io/address/0x4b89f8996892d137c3de1312d1dd4e4f4ffca171 (Third Party Advisory)

Frequently asked questions

What is CVE-2020-35962?: CVE-2020-35962 is a high-severity vulnerability in Loopring. CVSS score: 7.5/10. Published 2021-01-03.
How severe is CVE-2020-35962?: High severity. CVSS v3 base score is 7.5 out of 10.