CVE-2020-35359

Exp

Pure-FTPd 1.0.48 allows remote attackers to prevent legitimate server use by making enough connections to exceed the connection limit.

Published: 2020-12-26 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-35359 is rated High Exploit Risk (75.3/100): CVSS High severity, with high exploitation likelihood (EPSS 7.02%, 91th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-35359

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-35359

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-05 8.64% 7.02% -1.62%
2 2025-11-21 18.71% 8.64% -10.07%
3 2025-11-18 — 18.71% —

Full EPSS history (26 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-35359

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2020-35359

OS Trackers for CVE-2020-35359

vendor priority summary link
suse medium CVE-2020-35359 severity moderate: SUSE including 1 source package names (pure-ftpd), 4 product×package rows across 4 product lines (SUSE Linux Enterprise Point of Service 11 SP3, SUSE Linux Enterprise Server 11 SP1 for Teradata, SUSE Linux Enterprise Server 11 SP3 for Teradata, SUSE Linux Enterprise Server 11 SP4 LTSS): Known Not Affected 4. https://www.suse.com/security/cve/CVE-2020-35359/
ubuntu medium CVE-2020-35359 medium priority: Ubuntu including 1 source packages (pure-ftpd), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 8, needs-triage 7, DNE 1. https://ubuntu.com/security/CVE-2020-35359

Affected software / configurations for CVE-2020-35359

Vendor Product Version Raw CPE
pureftpd pure-ftpd 1.0.48 cpe:2.3:a:pureftpd:pure-ftpd:1.0.48:*:*:*:*:*:*:*

References for CVE-2020-35359

URL Tags
https://www.exploit-db.com/exploits/49105 Exploit Third Party Advisory VDB Entry
cvelogic Threat Intelligence