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01 Record

CVE-2021-21793

An out-of-bounds write vulnerability exists in the JPG sof_nb_comp header processing functionality of Accusoft ImageGear 19.8 and 19.9. A specially crafted malformed file can lead to memory

CriticalPUBLISHEDCNA: talos
CNA base score9.8 CVSS v3.xCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

02 Description

An out-of-bounds write vulnerability exists in the JPG sof_nb_comp header processing functionality of Accusoft ImageGear 19.8 and 19.9. A specially crafted malformed file can lead to memory

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.13% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 66.4% of scored records. A rank, not a probability.
NVD base score
8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-07-08 11:11Z5 YR AGO
Last updated
2024-08-03 18:23Z2 YR AGO
Reserved
2021-01-04
Assigning CNA
talos
Record state
PUBLISHED
Severity
Critical (CVSS 9.8)
CNA CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-131Incorrect Calculation of Buffer SizeBase
  • CWE-787Out-of-bounds WriteBase
Data version
5.1
Document digest
26c7e8c90b77be101137f0e5e01607204513b96e6c336e515cce6338a46aec60

05 Affected products

VendorProductVersionsPlatforms
n/aAccusoftAccusoft ImageGear 19.8 , Accusoft ImageGear 19.9—

06 References