High severity · published Apr 8, 2022
CVE-2021-40656
libsixel before 1.10 is vulnerable to Buffer Overflow in libsixel/src/quant.c:867
8.8
CVSS
1%
EPSS
No
On KEV
Description
libsixel before 1.10 is vulnerable to Buffer Overflow in libsixel/src/quant.c:867.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libsixel · Libsixel
before 1.10.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-40656
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-40656
Exploit
https://github.com/libsixel/libsixel/issues/25
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