NVD / CVE Program· CNA redhat

CVE-2009-3555: The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in…

CriticalCVSS 9.8 · v3.1—Proof of concept Fix available

Noroxi assessment

Priority: This week (action score 65/100)

Public proof-of-concept code exists (Exploit-DB, GitHub); there is no record of exploitation in the wild.
Probability of exploitation in the next 30 days: 87.2% (FIRST EPSS); higher than 99.7% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: apache2 (Debian:12) 2.2.14-2; lighttpd (Debian:12) 1.4.30-1; nginx (Debian:12) 0.7.64-1.
Mentioned 3 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Don’t wait for the next maintenance window. Upgrade to apache2 (Debian:12) 2.2.14-2; lighttpd (Debian:12) 1.4.30-1; nginx (Debian:12) 0.7.64-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in the Apache HTTP Server 2.2.14 and earlier, OpenSSL before 0.9.8l, GnuTLS 2.8.5 and earlier, Mozilla Network Security Services (NSS) 3.12.4 and earlier, multiple Cisco products, and other products, does not properly associate renegotiation handshakes with an existing connection, which allows man-in-the-middle attackers to insert data into HTTPS sessions, and possibly other types of sessions protected by TLS or SSL, by sending an unauthenticated request that is processed retroactively by a server in a post-renegotiation context, related to a "plaintext injection" attack, aka the "Project Mogul" issue.

Published: Nov 9, 2009
Updated: Jun 16, 2026
EPSS: 87.2% · 99th percentile
CWE: CWE-295

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Action score

This week

Don’t wait for the next maintenance window.

CVSS: 39 / 40 · 9.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 26 / 30 · 87.2%

CISA SSVC decision

Exploitation: proof of concept
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
Proof of concept exists, no weaponized module
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
apache	http server	cpe:2.3:a:apache:http_server
gnu	gnutls	cpe:2.3:a:gnu:gnutls
mozilla	nss	cpe:2.3:a:mozilla:nss
openssl	openssl	cpe:2.3:a:openssl:openssl
canonical	ubuntu linux	cpe:2.3:o:canonical:ubuntu_linux
debian	debian linux	cpe:2.3:o:debian:debian_linux
fedoraproject	fedora	cpe:2.3:o:fedoraproject:fedora
f5	nginx	cpe:2.3:a:f5:nginx

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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

apache http serverup to 2.2.14 inclusive
f5 nginx0.1.0 and later · up to 0.8.22 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	apache2	before 2.2.14-2	2.2.14-2
Debian:12	lighttpd	before 1.4.30-1	1.4.30-1
Debian:12	nginx	before 0.7.64-1	0.7.64-1
Debian:12	nss	before 3.12.6-1	3.12.6-1
Debian:12	openssl	before 0.9.8k-6	0.9.8k-6
Debian:12	tomcat-native	before 1.1.18-1	1.1.18-1
Debian:13	pound	before 2.6-6.1	2.6-6.1
Debian:4.0	apache2	before 2.2.3-4+etch11	2.2.3-4+etch11
Debian:5.0	apache2	before 2.2.9-10+lenny6	2.2.9-10+lenny6
Debian:5.0	nss	before 3.12.3.1-0lenny3	3.12.3.1-0lenny3
Debian:5.0	openssl	before 0.9.8g-15+lenny11	0.9.8g-15+lenny11
Debian:6.0	lighttpd	before 1.4.28-2+squeeze1.2	1.4.28-2+squeeze1.2
Debian:6.0	pound	before 2.6-1+deb6u1	2.6-1+deb6u1
Debian:7	pound	before 2.6-2+deb7u1	2.6-2+deb7u1
Debian:8	pound	before 2.6-6+deb8u1	2.6-6+deb8u1
Maven	org.apache.tomcat:tomcat	from 5.0.0 · before 5.5.33	5.5.33
Maven	org.apache.tomcat:tomcat	from 6.0.0 · before 6.0.32	6.0.32
Maven	org.apache.tomcat:tomcat	from 7.0.0 · before 7.0.10	7.0.10
openSUSE:Tumbleweed	apache2	before 2.4.23-4.1	2.4.23-4.1
openSUSE:Tumbleweed	MozillaThunderbird	before 45.5.1-1.1	45.5.1-1.1
Red Hat:enterprise_linux:3::as	httpd	before 0:2.0.46-77.ent	0:2.0.46-77.ent
Red Hat:enterprise_linux:3::as	httpd-debuginfo	before 0:2.0.46-77.ent	0:2.0.46-77.ent
Red Hat:enterprise_linux:3::as	httpd-devel	before 0:2.0.46-77.ent	0:2.0.46-77.ent
Red Hat:enterprise_linux:3::as	mod_ssl	before 1:2.0.46-77.ent	1:2.0.46-77.ent

+96

Same product

apache: all records

Other highest-scoring records for the same primary product.

CVE-2021-42013Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)KEV
99Now
CVE-2021-41773Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49KEV
99Now
CVE-2024-38475Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.KEV
96Now

Published before and after this one in the same product

← EarlierCVE-2009-3095Sep 8, 2009 · The mod_proxy_ftp module in the Apache HTTP Server allows remote attackers to bypass intended access restrictions and send arbitrary…
24Monitor
← EarlierCVE-2009-2699Oct 13, 2009 · The Solaris pollset feature in the Event Port backend in poll/unix/port.c in the Apache Portable Runtime (APR) library before 1.3.9, as…
34Monitor
Later →CVE-2010-0010Feb 2, 2010 · Integer overflow in the ap_proxy_send_fb function in proxy/proxy_util.c in mod_proxy in the Apache HTTP Server before 1.3.42 on 64-bit…
40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
debian:apache2	2.2.14-2 · Debian:12	Package registry (OSV)
debian:lighttpd	1.4.30-1 · Debian:12	Package registry (OSV)
debian:nginx	0.7.64-1 · Debian:12	Package registry (OSV)
debian:nss	3.12.6-1 · Debian:12	Package registry (OSV)
debian:openssl	0.9.8k-6 · Debian:12	Package registry (OSV)
debian:pound	2.6-6.1 · Debian:13	Package registry (OSV)
debian:tomcat-native	1.1.18-1 · Debian:12	Package registry (OSV)
Maven:org.apache.tomcat:tomcat	5.5.33	Package registry (OSV)
Maven:org.apache.tomcat:tomcat	6.0.32	Package registry (OSV)
Maven:org.apache.tomcat:tomcat	7.0.10	Package registry (OSV)
opensuse:apache2	2.4.23-4.1 · openSUSE:Tumbleweed	Package registry (OSV)
opensuse:MozillaThunderbird	45.5.1-1.1 · openSUSE:Tumbleweed	Package registry (OSV)
red hat:httpd	0:2.0.46-77.ent · Red Hat:enterprise_linux:3::as	Package registry (OSV)
red hat:httpd-debuginfo	0:2.0.46-77.ent · Red Hat:enterprise_linux:3::as	Package registry (OSV)
red hat:httpd-devel	0:2.0.46-77.ent · Red Hat:enterprise_linux:3::as	Package registry (OSV)
red hat:httpd-manual	0:2.2.3-31.el5_4.2 · Red Hat:enterprise_linux:5::client_workstation	Package registry (OSV)
red hat:httpd-suexec	0:2.0.52-41.ent.6 · Red Hat:enterprise_linux:4::as	Package registry (OSV)
red hat:java-1.6.0-ibm	1:1.6.0.7-1jpp.3.el4 · Red Hat:rhel_extras:4	Package registry (OSV)
red hat:java-1.6.0-ibm-demo	1:1.6.0.7-1jpp.3.el4 · Red Hat:rhel_extras:4	Package registry (OSV)
red hat:java-1.6.0-ibm-devel	1:1.6.0.7-1jpp.3.el4 · Red Hat:rhel_extras:4	Package registry (OSV)
red hat:java-1.6.0-ibm-javacomm	1:1.6.0.7-1jpp.3.el4 · Red Hat:rhel_extras:4	Package registry (OSV)
red hat:java-1.6.0-ibm-jdbc	1:1.6.0.7-1jpp.3.el4 · Red Hat:rhel_extras:4	Package registry (OSV)
red hat:java-1.6.0-ibm-plugin	1:1.6.0.7-1jpp.3.el4 · Red Hat:rhel_extras:4	Package registry (OSV)
red hat:mod_ssl	1:2.0.46-77.ent · Red Hat:enterprise_linux:3::as	Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

Exploit-DB entry ×2
Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Exploit-DB entry	remote	2009-11-10
Exploit-DB entry	remote	2009-12-21
Proof-of-concept repository on GitHub	stars:3	2022-03-30

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

PublishedNov 9, 2009
First PoCNov 10, 2009same day
TodayNov 13, 2026+6213 d

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-22-0412 · Jun 10, 2022(Mitsubishi Electric Bildirimi)
TR-19-115 · Aug 22, 2019(NGINX Sunucu Güvenlik Güncellemesi)
TR-18-110 · Aug 17, 2018 TR-18-110 (Apache, Tomcat için Güvenlik Güncellemeleri Yayınladı)

All national notices →

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-295 · Improper Certificate Validation

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Root cause

A certificate validation error is silently swallowed instead of terminating the connection. Often, code added for a test environment makes its way into production.

The bug in code

The whole CWE-295 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

kotlin

1override fun checkServerTrusted(chain: Array<X509Certificate>, type: String) {
2  // Left empty for the test environment
3}

Fixed

kotlin

1val client = OkHttpClient.Builder()
2  .certificatePinner(
3    CertificatePinner.Builder()
4      .add("api.sirius.example", "sha256/…")
5      .build()
6  ).build()

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log (1)

Fix✗ → ✓Sep 28, 2026, 10:47 PM UTC

For records you follow, these changes also arrive as notifications. →

References

archives.neohapsis.com/archives/bugtraq/2013-11/0120.html

Show all references (19 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records

Noroxi analysis

What does it mean in your environment?

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Data sources and verification

CNA: redhat

CVE.org (CNA)May 27, 2026, 3:38 PM UTC
CISA ADPMay 27, 2026, 3:38 PM UTC
NVDJun 16, 2026, 7:11 PM UTC
FIRST EPSSNov 12, 2026, 12:00 AM UTC
OSV / GHSANov 13, 2026, 3:18 AM UTC
Exploit-DBNov 13, 2026, 3:17 AM UTC
PoC-in-GitHubNov 13, 2026, 3:18 AM UTC

Each line is when that source was last processed for this record.

CVE-2009-3555: The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in…

Noroxi assessment

Get told when this record changes

Follow CVE-2009-3555

What does it mean in your environment?

Affected systems

Is your version affected?

Watch new CVEs for http server

Affected versions

Package-level exposure

Same product

Remediation

Which version to upgrade to

Exploit status

Research context

Timeline

National notice (Türkiye Cybersecurity Directorate / USOM)

Technical details

Attack conditions

If successful

Root cause

The bug in code

Attack context

References