CVE-2009-0751

Exp

Yaws before 1.80 allows remote attackers to cause a denial of service (memory consumption and crash) via a request with a large number of headers.

Published: 2009-03-02 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-0751 is rated High Exploit Risk (63.3/100): CVSS Medium severity, with high exploitation likelihood (EPSS 10.40%, 95th 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-2009-0751

EDB-ID Source Kind Published Link
8148 exploit_db edb 2009-03-03 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-0751

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 19.53% 10.40% -9.13%
2 2026-03-02 22.40% 19.53% -2.87%
3 2025-10-16 — 22.40% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-0751

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
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-2009-0751

OS Trackers for CVE-2009-0751

vendor priority summary link
debian not yet assigned CVE-2009-0751 not yet assigned priority: Debian including 1 source packages (yaws), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2009-0751
ubuntu low CVE-2009-0751 low priority: Ubuntu including 1 source packages (yaws), 11 status rows across 11 suites (dapper, gutsy, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): not-affected 6, ignored 4, needs-triage 1. https://ubuntu.com/security/CVE-2009-0751

Affected software / configurations for CVE-2009-0751

Vendor Product Version Raw CPE
yaws yaws <= 1.79 cpe:2.3:a:yaws:yaws:*:*:*:*:*:*:*:*
yaws yaws 1.50 cpe:2.3:a:yaws:yaws:1.50:*:*:*:*:*:*:*
yaws yaws 1.51 cpe:2.3:a:yaws:yaws:1.51:*:*:*:*:*:*:*
yaws yaws 1.52 cpe:2.3:a:yaws:yaws:1.52:*:*:*:*:*:*:*
yaws yaws 1.53 cpe:2.3:a:yaws:yaws:1.53:*:*:*:*:*:*:*
yaws yaws 1.54 cpe:2.3:a:yaws:yaws:1.54:*:*:*:*:*:*:*
yaws yaws 1.55 cpe:2.3:a:yaws:yaws:1.55:*:*:*:*:*:*:*
yaws yaws 1.56 cpe:2.3:a:yaws:yaws:1.56:*:*:*:*:*:*:*
yaws yaws 1.57 cpe:2.3:a:yaws:yaws:1.57:*:*:*:*:*:*:*
yaws yaws 1.58 cpe:2.3:a:yaws:yaws:1.58:*:*:*:*:*:*:*
yaws yaws 1.61 cpe:2.3:a:yaws:yaws:1.61:*:*:*:*:*:*:*
yaws yaws 1.62 cpe:2.3:a:yaws:yaws:1.62:*:*:*:*:*:*:*
yaws yaws 1.63 cpe:2.3:a:yaws:yaws:1.63:*:*:*:*:*:*:*
yaws yaws 1.64 cpe:2.3:a:yaws:yaws:1.64:*:*:*:*:*:*:*
yaws yaws 1.65 cpe:2.3:a:yaws:yaws:1.65:*:*:*:*:*:*:*
yaws yaws 1.66 cpe:2.3:a:yaws:yaws:1.66:*:*:*:*:*:*:*
yaws yaws 1.67 cpe:2.3:a:yaws:yaws:1.67:*:*:*:*:*:*:*
yaws yaws 1.68 cpe:2.3:a:yaws:yaws:1.68:*:*:*:*:*:*:*
yaws yaws 1.70 cpe:2.3:a:yaws:yaws:1.70:*:*:*:*:*:*:*
yaws yaws 1.71 cpe:2.3:a:yaws:yaws:1.71:*:*:*:*:*:*:*
yaws yaws 1.72 cpe:2.3:a:yaws:yaws:1.72:*:*:*:*:*:*:*
yaws yaws 1.73 cpe:2.3:a:yaws:yaws:1.73:*:*:*:*:*:*:*
yaws yaws 1.74 cpe:2.3:a:yaws:yaws:1.74:*:*:*:*:*:*:*
yaws yaws 1.75 cpe:2.3:a:yaws:yaws:1.75:*:*:*:*:*:*:*
yaws yaws 1.76 cpe:2.3:a:yaws:yaws:1.76:*:*:*:*:*:*:*
yaws yaws 1.77 cpe:2.3:a:yaws:yaws:1.77:*:*:*:*:*:*:*
yaws yaws 1.78 cpe:2.3:a:yaws:yaws:1.78:*:*:*:*:*:*:*

References for CVE-2009-0751

cvelogic Threat Intelligence