CVE-2005-1857

Format string vulnerability in simpleproxy before 3.4 allows remote malicious HTTP proxies to execute arbitrary code via format string specifiers in a reply.

Published: 2005-09-02 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2005-1857 is rated Moderate Risk (64.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.32%). EPSS rose +2.77% over the last day, indicating growing attacker interest. 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-2005-1857

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 1.55% 4.32% +2.77%
2 2025-03-30 2.38% 1.55% -0.83%
3 2025-03-29 — 2.38% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2005-1857

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-2005-1857

OS Trackers for CVE-2005-1857

vendor priority summary link
debian medium CVE-2005-1857 medium priority: Debian including 1 source packages (simpleproxy), 4 status rows across 4 suites (bookworm, bullseye, forky, sid): resolved 4. https://security-tracker.debian.org/tracker/CVE-2005-1857
ubuntu medium CVE-2005-1857 medium priority: Ubuntu including 1 source packages (simpleproxy), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): released 3, needs-triage 1. https://ubuntu.com/security/CVE-2005-1857

Affected software / configurations for CVE-2005-1857

Vendor Product Version Raw CPE
simpleproxy simpleproxy 2.2b cpe:2.3:a:simpleproxy:simpleproxy:2.2b:*:*:*:*:*:*:*
simpleproxy simpleproxy 3.0 cpe:2.3:a:simpleproxy:simpleproxy:3.0:*:*:*:*:*:*:*
simpleproxy simpleproxy 3.1 cpe:2.3:a:simpleproxy:simpleproxy:3.1:*:*:*:*:*:*:*
simpleproxy simpleproxy 3.2 cpe:2.3:a:simpleproxy:simpleproxy:3.2:*:*:*:*:*:*:*

References for CVE-2005-1857

cvelogic Threat Intelligence