CVE-2021-28546
MEDIUMEPSS 70th pctlDescription
Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are missing support for an integrity check. An unauthenticated attacker could leverage this vulnerability to modify content in a certified PDF without invalidating the certification. Exploitation of this issue requires user interaction in that a victim must open the tampered file.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Exploit Intelligence
Elevated risk: more likely to be exploited than 70% of all known CVEs.
References
Related Vulnerabilities
Other CWE-353 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2021-28545 | High | 8.1 | 2.3% | - | - |
| CVE-2019-10943 | High | 7.5 | 1.0% | - | Fix |
| CVE-2020-10124 | High | 7.1 | 0.7% | - | - |
| CVE-2020-7878 | Critical | 9.8 | 0.7% | - | - |
| CVE-2020-7808 | High | 8.7 | 0.7% | - | - |
| CVE-2023-29290 | Medium | 5.3 | 0.6% | - | - |
Common questions
How do I fix CVE-2021-28546?
No published fix for CVE-2021-28546 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2021-28546 being actively exploited?
Not that we know of. CVE-2021-28546 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.4% is the estimated probability that it will be exploited in the next 30 days. That is higher than 70% of all scored CVEs.
How severe is CVE-2021-28546?
CVE-2021-28546 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.