CVE-2005-0687

Format string vulnerability in Hashcash 1.16 allows remote attackers to cause a denial of service (memory consumption) and possibly execute arbitrary code via format string specifiers in a reply address, which is not properly handled when printing the header.

Published: 2005-03-06 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2005-0687 is rated Moderate Risk (60.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.88%). Review affected assets and schedule 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-2005-0687

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 2.05% 2.88% +0.83%
2 2025-03-30 3.04% 2.05% -0.99%
3 2025-03-29 — 3.04% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2005-0687

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
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-2005-0687

OS Trackers for CVE-2005-0687

vendor priority summary link
debian not yet assigned CVE-2005-0687 not yet assigned priority: Debian including 1 source packages (hashcash), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2005-0687
gentoo normal CVE-2005-0687: 1 GLSA(s) (200503-12), 1 atom(s) (net-misc/hashcash); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2005-0687

Affected software / configurations for CVE-2005-0687

Vendor Product Version Raw CPE
hashcash hashcash 1.14 cpe:2.3:a:hashcash:hashcash:1.14:*:*:*:*:*:*:*
hashcash hashcash 1.15 cpe:2.3:a:hashcash:hashcash:1.15:*:*:*:*:*:*:*
hashcash hashcash 1.16 cpe:2.3:a:hashcash:hashcash:1.16:*:*:*:*:*:*:*

References for CVE-2005-0687

cvelogic Threat Intelligence