CVE-2021-21776
An out-of-bounds write vulnerability exists in the SGI Format Buffer Size Processing...
An out-of-bounds write vulnerability exists in the SGI Format Buffer Size Processing functionality of Accusoft ImageGear 19.8. A specially crafted malformed file can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
An out-of-bounds write vulnerability exists in the SGI Format Buffer Size Processing functionality of Accusoft ImageGear 19.8. A specially crafted malformed file can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.
- Record
CVE-2021-21776- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-131
- Updated
- 2026-11-02
EUVDEUVD-2021-8948
An out-of-bounds write vulnerability exists in the SGI Format Buffer Size Processing functionality of Accusoft ImageGear 19.8. A specially crafted malformed file can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.
- Record
EUVD-2021-8948- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hvq9-73jh-xqvp
An out-of-bounds write vulnerability exists in the SGI Format Buffer Size Processing...
An out-of-bounds write vulnerability exists in the SGI Format Buffer Size Processing functionality of Accusoft ImageGear 19.8. A specially crafted malformed file can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.
- Record
GHSA-hvq9-73jh-xqvp- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-131, CWE-787
- Updated
- 2026-11-02
NVD
An out-of-bounds write vulnerability exists in the SGI Format Buffer Size Processing functionality of Accusoft ImageGear 19.8. A specially crafted malformed file can lead to memory corruption. An attacker can provide a malicious file to trigger this vulnerability.
- Record
CVE-2021-21776- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-131
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-21776 is a critical vulnerability (CVSS 9.8) in Accusoft Imagegear, published March 31, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.37%, the 72nd percentile. No source names a fixed version.