HIGH
CVE-2020-8984
CWE-346Published: March 24, 2020· Updated: Jun 17, 2026
7.5
CVSS v3.1
Official Description
lib/NSSDropbox.php in ZendTo prior to 5.22-2 Beta allowed IP address spoofing via the X-Forwarded-For header.
Technical Analysis
CVE-2020-8984 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected Vendors & Products
zend1 product(s)
zendto
Source: NVD CPE · 123 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
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (4)
→
http://jul.es/pipermail/zendto/2020-January/003845.htmlThird Party Advisory
→
https://zend.to/changelog.phpRelease Notes · Vendor Advisory
→
http://jul.es/pipermail/zendto/2020-January/003845.htmlThird Party Advisory
→
https://zend.to/changelog.phpRelease Notes · Vendor Advisory
Quick Facts
CVE IDCVE-2020-8984
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-346
CISA KEVNo
Affected1 vendor(s)
PublishedMar 24, 2020
Related CVEs (CWE-346)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-8984 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.