CVE-2021-33198: golang go
Vulnerability summary
CVE-2021-33198 is a high (CVSS 7.5) vulnerability in golang go. EPSS estimates a 3.37% chance of exploitation in the next 30 days, higher than 88.7% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 25 · Related 7Timeline
- 02-08-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
In Go before 1.15.13 and 1.16.x before 1.16.5, there can be a panic for a large exponent to the math/big.Rat SetString or UnmarshalText method.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
3.37%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.37% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (groups.google.com)
Maturity: unknown
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu2 products
- golang-1.16All versions (No fix recorded)
- golang-1.8All versions (No fix recorded)
Alpine1 product
- go≥ 1.16.0, < 1.15.13-r0 | ≥ 1.16.0, < 1.16.5-r0
Debian1 product
- golang-1.15< 1.15.9-5
Go1 product
- stdlib≥ 1.16.0-0, < 1.16.5
Golang1 product
- go< 1.15.13 | ≥ 1.16.0, < 1.16.5
5 vendors · 6 products
References
12 links- groups.google.com/g/golang-announce/c/RgCMkAEQjSIX Refsource MISCREPORTWEBExploitPatchThird Party Advisory
- go.dev/issue/45910REPORT
