MEDIUM
CVE-2021-33795
CWE-755Published: July 9, 2021· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
Foxit Reader before 10.1.4 and PhantomPDF before 10.1.4 produce incorrect PDF document signatures because the certificate name, document owner, and signature author are mishandled.
Technical Analysis
CVE-2021-33795 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 5.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Affected Vendors & Products
foxitsoftware2 product(s)
foxit readerphantompdf
Source: NVD CPE · 2 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
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PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories
All References (2)
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Quick Facts
CVE IDCVE-2021-33795
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-755
CISA KEVNo
Affected1 vendor(s)
PublishedJul 9, 2021
Related CVEs (CWE-755)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-33795 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.