CVE-2021-39247
MEDIUM
6.5
CVSS Score
Published: August 17, 2021 at 08:17 PM UTC
Updated: June 17, 2026 at 04:03 AM UTC
1 product affected across 1 vendorBarcode Generator
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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.9%
Description
Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to is_last_single_ascii in code1.c, and rs_encode_uint in reedsol.c.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 2.10.0
Affected range stops below 2.10.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://sourceforge.net/p/zint/code/ci/9b02cd52214e80f945bff41fc94bc1e17e15810c/x_refsource_MISCExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://sourceforge.net/p/zint/tickets/232/CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-125
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