CVE-2021-46700
MEDIUMCVSS 6.5/10EPSS 0.82%
Last modified
CVE-2021-46700 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in encoder.c) has a double free.. EPSS estimates a 0.82% chance of exploitation in the next 30 days.
Description
In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in encoder.c) has a double free.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Saitoha | Libsixel | 1.8.6 |
References
- https://github.com/saitoha/libsixel/issues/158Exploit, Issue Tracking, Third Party Advisory
- https://github.com/saitoha/libsixel/issues/158Exploit, Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-46700?
In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in encoder.c) has a double free.
How severe is CVE-2021-46700?
CVE-2021-46700 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.82% probability of exploitation in the next 30 days.
How do I fix CVE-2021-46700?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Are you affected by CVE-2021-46700?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST