CVE-2021-39823 json
svg-native-viewer Heap Buffer overflow Vulnerability
published 2021-09-27 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26180
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.2%
- EPSS 4.2% chance of exploitation in 30 days, percentile 91%
- public exploits
- 0
- none known
Summary
Adobe svg-native-viewer 8182d14dfad5d1e10f53ed830328d7d9a3cfa96d and earlier versions are affected by a heap buffer overflow vulnerability due to insecure handling of a malicious .svg file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability.
Patch / fix
Exploit prediction
4.25% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Adobe SVG Native Viewer
Classification
- Weakness
-
- CWE-122 Heap-based Buffer Overflow
References
-
helpx.adobe.com
/security/products/svg-native-viewer/apsb21-72.html
patch, vendor-advisory
Sources
- CVE List CVE-2021-39823
- NVD CVE-2021-39823
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