CVE-2016-3125 [High] | Security Vulnerability in Proftpd

CVE-2016-3125 is rated High Risk (67.7/100): CVSS High severity, with high exploitation likelihood (EPSS 6.98%, 93th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +5.61% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	1.37%	6.98%	+5.61%
2	2025-12-28	0.87%	1.37%	+0.51%
3	2025-12-27	—	0.87%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

1.37%

6.98%

+5.61%

2025-12-28

0.87%

1.37%

+0.51%

2025-12-27

—

0.87%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.0	HIGH	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N` 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:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	3.9	3.6	[email protected]
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:P/I:N/A:N` 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:P) Partial confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:N) No availability impact.	10.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.0

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 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:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:N): Service keeps running; no real outage angle.

3.9

3.6

[email protected]

5.0

2.0

MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N 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:P): Partial confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:N): No availability impact.

10.0

2.9

[email protected]

OS Trackers for CVE-2016-3125

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2016-3125 not yet assigned priority: Debian including 1 source packages (proftpd-dfsg), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2016-3125
`ubuntu`	medium	CVE-2016-3125 medium priority: Ubuntu including 1 source packages (proftpd-dfsg), 24 status rows across 24 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, precise, questing, trusty, upstream, wily, xenial, yakkety, zesty): not-affected 16, ignored 5, DNE 1, needed 1, released 1.	https://ubuntu.com/security/CVE-2016-3125

Affected software / configurations for CVE-2016-3125

Vendor	Product	Version	Raw CPE
proftpd	proftpd	<= 1.3.5	cpe:2.3:a:proftpd:proftpd::a::::::*
proftpd	proftpd	1.3.6	cpe:2.3:a:proftpd:proftpd:1.3.6:rc1::::::
opensuse	opensuse	13.1	cpe:2.3:o:opensuse:opensuse:13.1:::::::*
fedoraproject	fedora	22	cpe:2.3:o:fedoraproject:fedora:22:::::::*
fedoraproject	fedora	23	cpe:2.3:o:fedoraproject:fedora:23:::::::*

References for CVE-2016-3125

URL	Tags
http://bugs.proftpd.org/show_bug.cgi?id=4230	Issue Tracking
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/179109.html	Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/179143.html	Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/179905.html
http://lists.opensuse.org/opensuse-updates/2016-05/msg00080.html
http://lists.opensuse.org/opensuse-updates/2016-06/msg00045.html	Third Party Advisory
http://proftpd.org/docs/NEWS-1.3.5b	Release Notes
http://proftpd.org/docs/NEWS-1.3.6rc2	Release Notes
http://www.openwall.com/lists/oss-security/2016/03/11/14	Mailing List
http://www.openwall.com/lists/oss-security/2016/03/11/3	Mailing List

URL

CVE-2016-3125

Exploit prediction scoring system (EPSS) score for CVE-2016-3125

Common vulnerability scoring system (CVSS) metrics for CVE-2016-3125

Weakness enumeration for CVE-2016-3125

OS Trackers for CVE-2016-3125

Affected software / configurations for CVE-2016-3125

References for CVE-2016-3125