CVE-2021-39821: adobe indesign Out-of-bounds Read
CVSS: 7.8v3.0HighModified
Published 29-09-2021Last modified 23-04-2025
Vulnerability summary
CVE-2021-39821 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in adobe indesign. EPSS estimates a 3.97% chance of exploitation in the next 30 days, higher than 90.3% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.0 (CVE.org)EPSS score
3.97%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 29-09-2021PublishedVulnerability first disclosed.
- 23-04-2025Last modifiedVulnerability information updated.
Description
Adobe InDesign versions 16.3 (and earlier), and 16.3.1 (and earlier) are affected by an out-of-bounds read vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious TIF file.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.8Preferred score · CVE.org (CNA)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST7.8HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
3.97%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
0.00 pp
From 3.97% on 19-09-2026
19-09-202619-10-2026
EPSS score3.97%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Adobe1 product
- indesign≥ unspecified, ≤ 16.3 | ≥ unspecified, ≤ 16.3.2 | ≥ unspecified, ≤ None | ≤ 16.3.2 | ≤ 16.3
1 vendor · 1 product
References
1 links- helpx.adobe.com/security/products/indesign/apsb21-73.htmlX Refsource MISCRelease NotesVendor Advisory