CVE-2021-33642
MEDIUM
5.5
CVSS Score
Published: January 20, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 03:54 AM UTC
1 product affected across 1 vendorByacc
Using byacc by N/A?
Get instant alerts when new vulnerabilities affect byacc - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit
Description
When a file is processed, an infinite loop occurs in next_inline() of the more_curly() function.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 1.9.202003302.0 ≤ v < 2.0.20210808
Affected range stops below 1.9.20200330, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.0.20210808, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (1)
Permissions RequiredThird Party Advisory
Source: [email protected]
https://gitee.com/src-openeuler/byacc/commit/50225f48c6b53e9d7c936681a06682404cb8ec4dSSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
5.5MEDIUMCISA-ADP
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-835
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card