CVE-2009-5111 — GoAhead WebServer allows remote attackers to cause a denial of service (daemon outage) via partial HTTP requests, as demonstrated by Slowloris

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MEDIUM

GoAhead WebServer allows remote attackers to cause a denial of service (daemon outage) via partial HTTP requests, as demonstrated by Slowloris

Published Dec 27, 2011

5.0

MEDIUM

CVSS 2.0

EPSS 1.12%

Description

GoAhead WebServer allows remote attackers to cause a denial of service (daemon outage) via partial HTTP requests, as demonstrated by Slowloris.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.12% 0.01118

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.01118

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 2, 2026	1.12% (0.01118)	64.93th	v5 (v2026.06.15)
Jun 15, 2026	1.22% (0.01218)	64.56th	v5 (v2026.06.15)
Mar 17, 2025	0.44% (0.00436)	60.85th	v4 (v2025.03.14)
Dec 12, 2024	0.33% (0.00333)	72.03th	v3 (v2023.03.01)
Apr 25, 2024	0.19% (0.00188)	55.57th	v3 (v2023.03.01)
Mar 15, 2024	0.17% (0.00173)	53.38th	v3 (v2023.03.01)
Feb 8, 2024	0.16% (0.00157)	50.80th	v3 (v2023.03.01)
Mar 7, 2023	0.33% (0.00333)	66.54th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)

Weaknesses (1)

CWE-399

References (1)

http://ha.ckers.org/slowloris/
x_refsource_MISC

Link	Providers	Tags
http://ha.ckers.org/slowloris/		x_refsource_MISC

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Dec 27, 2011

Updated Sep 17, 2024

Reserved Dec 27, 2011

Link CVE-2009-5111

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2009-5111

Red Hat

Severity n/a

Public date n/a

Links CVE-2009-5111