CVE-2017-17663

The htpasswd implementation of mini_httpd before v1.28 and of thttpd before v2.28 is affected by a buffer overflow that can be exploited remotely to perform code execution.

Published: 2018-02-06 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-17663 is rated High Risk (69.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.45%). EPSS rose +1.28% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2017-17663

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 2026-06-15 1.17% 2.45% +1.28%
2 2026-05-26 0.58% 1.17% +0.59%
3 2025-12-28 — 0.58% —

Full EPSS history (22 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-17663

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/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:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2017-17663

OS Trackers for CVE-2017-17663

vendor priority summary link
alpine — CVE-2017-17663: 1 source package rows (mini_httpd); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. https://security.alpinelinux.org/vuln/CVE-2017-17663
debian unimportant CVE-2017-17663 unimportant priority: Debian including 1 source packages (mini-httpd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2017-17663
ubuntu medium CVE-2017-17663 medium priority: Ubuntu including 1 source packages (mini-httpd), 20 status rows across 20 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 13, ignored 3, needed 2, needs-triage 1, released 1. https://ubuntu.com/security/CVE-2017-17663

Affected software / configurations for CVE-2017-17663

Vendor Product Version Raw CPE
acme mini_httpd < 1.28 cpe:2.3:a:acme:mini_httpd:*:*:*:*:*:*:*:*
acme thttpd < 2.28 cpe:2.3:a:acme:thttpd:*:*:*:*:*:*:*:*

References for CVE-2017-17663

URL Tags
http://acme.com/updates/archive/199.html Third Party Advisory
cvelogic Threat Intelligence