High severity · published Apr 14, 2022
CVE-2021-21946
Two heap-based buffer overflow vulnerabilities exists in the JPEG-JFIF lossless Huffman image parser functionality of Accusoft ImageGear 19.10
8.8
CVSS
1.1%
EPSS
No
On KEV
Description
Two heap-based buffer overflow vulnerabilities exists in the JPEG-JFIF lossless Huffman image parser functionality of Accusoft ImageGear 19.10. A specially-crafted file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger these vulnerabilities.This heap-based buffer overflow takes place when the `SOF3` precision is lower than 9.
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)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IM
ImageGear · Accusoft
19.10 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21946
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21946
Exploit
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1375
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