CVE-2020-7066 · threatengine.sh

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CVE

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CVE-2020-70664

In PHP versions 7.2.x below 7.2.29, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using get_headers() with user-suppli

In PHP versions 7.2.x below 7.2.29, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using get_headers() with user-supplied URL, if the URL contains zero (\0) character, the URL will be silently truncated at it. This may cause some software to make incorrect assumptions about the target of the get_headers() and possibly send some information to a wrong server.

MEDIUM · CVSS 5.3 EPSS 0.02767

EPSS exploitation odds2.77% · top 15%

Schedule remediation

Public exploit or PoC is available

No Sigma yet — build one → YARA rules0

Look this up elsewhere - one-click external pivots

NVD CVE.org CISA Exploit-DB GitHub PoC VulnCheck KEV GreyNoise

▸ How to read a CVE - triage first, then detect and patch

This page is every public fact about CVE-2020-7066, cross-linked. Its job is to answer one question fast - does this need my attention now? - and then hand you the two things you do about it. Here is how an analyst reads it.

Triage: should I act now? Four signals, and they are not interchangeable:

CVSSseverity - how bad it is IF exploited, 0-10. A high CVSS alone is not urgency; a flaw can be a perfect 10 and never actually be attacked. EPSSprobability - a model’s estimate of the chance it is exploited in the next 30 days, 0-1. This is the “will it actually happen” signal. CISA KEVconfirmed - it is being exploited in the wild right now. The strongest signal on the page; KEV beats any score. Weaponisedavailability - public exploits / PoCs, and especially Metasploit modules rated Excellent / Great. Reliable, packaged exploit code means low-skill attackers can use it today.

How they combine: KEV, or a dependable Metasploit module, means patch now regardless of CVSS. High CVSS + low EPSS + no exploit is real but not an emergency - schedule it. Low CVSS but KEV-listed still gets patched now. The verdict above already weighed these for you; this is how it got there.

Then what - two workflows:

Detectwhen you cannot patch today, follow this CVE to the ATT&CK techniques it enables, then Build a SIEM detection (the green button) - author a rule, test it in Atomic, deploy it. That buys visibility while the patch waits. PatchAffected products / packages tell you if you are exposed; Fixed versions by distribution and Vendor advisories give the exact version that closes it.

Reading order for the panels below: verdict + badges, then Public exploits / Metasploit (is it weaponised), then ATT&CK techniques + Sigma / IDS rules (can I detect it), then Affected products / packages + Fixed versions (am I exposed, what patches it), then Threat actors / IOCs (who uses it), then Scoring & timeline / references (the evidence).

⚠

Exploitation evidence

1 of 7 sources

Corroboration score 8/100 · emerging. This counts how many independent sources have exploitation evidence, and separates two different things: confirmed in-the-wild use (CISA KEV, Microsoft MSRC, ransomware activity) from exploit / PoC availability (Metasploit, ExploitDB, Nuclei, public PoCs). A template or PoC existing means an attack is possible and easy - it is not, on its own, proof the CVE is being exploited in the wild.

Exploit / PoC available

public PoC

↗

Exploitation momentum

899 days of EPSS

dormant

Flat and low - no real exploitation pressure. This reads the direction and speed of EPSS over time, which can move before EPSS itself peaks or before CISA lists it.

Window

EPSS 0.006 → 0.028 peak 0.189 velocity -0.000

▣

Severity & exploitation scoring

View on NVD →

CVSS base score

5.3

MEDIUMCVSS v3.1 · [email protected]

EPSS exploitation probability

2.77%

Top 15%odds of exploitation in the next 30 days

CVSS metric silhouette

shape grows toward worst-case

SSVC triage

No SSVC vulnrichment for this CVE. CISA's Vulnrichment program scores newer CVEs (~2024 onwards) plus selected older critical ones. Use the EPSS probability + KEV status to triage instead.

CVSS vector breakdown

Exploitability - how they get in

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Impact - what breaks

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

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

Lifecycle

01 Apr 2020Published to NVD
17 Jun 2026Last modified

Every entry is a recorded date - NVD publish/modify, CISA KEV add, public exploit disclosure. No inferred events.

Attack path

Full kill chain

→

⚠

Public Exploits & PoCs

These PoC and exploit links come from public sources and are not verified to be safe or functional. Review the code before running anything, and treat unverified entries as untrusted. Signed-in users mark whether it works, rate 1-10, and can report malware with a required reason that becomes a public comment.

poc Public PoC (nvd-reference)↗ date unknown

Works? no reports yet

Rating -

poc 0xbigshaq/php7-internals (trickest)↗ date unknown

Works? no reports yet

Rating -

poc ARPSyndicate/cvemon (trickest)↗ date unknown

Works? no reports yet

Rating -

poc bugs.php.net · bug.php?id=79329↗ bugs.php.net

Works? no reports yet

Rating -

◆

ATT&CK techniques

Techniques this CVE enables. Pills with a solid outline are high confidence - named directly in ATT&CK or Nuclei, or human-curated by CTID; the rest are inferred from the weakness type using MITRE's CVE Mapping Methodology and the CWE → CAPEC chain. Broad, generic-weakness guesses are filtered out. A small N× marks a technique that N independent sources agree on.

T1190 · Exploit Public-Facing Application

▤ Build a SIEM detection for these techniques

⬡

Weakness Classification

CWE-170Improper Null Termination

▤

Affected Products & Versions

php>= 7.2.0 and < 7.2.29
php>= 7.3.0 and < 7.3.16
php>= 7.4.0 and < 7.4.4
tenable tenable.sc< 5.19.0
tenable tenable.scall versions
opensuse leapall versions
debian linuxall versions

▤

Affected Packages

Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.

AlmaLinux:8 apcu-panel fixed in 5.1.17-1.module_el8.3.0+2009+b272fdef

AlmaLinux:8 libzip fixed in 1.5.2-1.module_el8.5.0+152+112d3b8c

AlmaLinux:8 libzip-devel fixed in 1.5.2-1.module_el8.4.0+2229+b272fdef

AlmaLinux:8 libzip-tools fixed in 1.5.2-1.module_el8.5.0+152+112d3b8c

AlmaLinux:8 php fixed in 7.3.20-1.module_el8.4.0+2229+b272fdef

AlmaLinux:8 php-bcmath fixed in 7.3.20-1.module_el8.4.0+2229+b272fdef

AlmaLinux:8 php-cli fixed in 7.3.20-1.module_el8.5.0+152+112d3b8c

AlmaLinux:8 php-common fixed in 7.3.20-1.module_el8.3.0+2009+b272fdef

AlmaLinux:8 php-dba fixed in 7.3.20-1.module_el8.5.0+152+112d3b8c

AlmaLinux:8 php-dbg fixed in 7.3.20-1.module_el8.3.0+2009+b272fdef

AlmaLinux:8 php-devel fixed in 7.3.20-1.module_el8.4.0+2229+b272fdef

AlmaLinux:8 php-embedded fixed in 7.3.20-1.module_el8.3.0+2009+b272fdef

AlmaLinux:8 php-enchant fixed in 7.3.20-1.module_el8.4.0+2229+b272fdef

AlmaLinux:8 php-fpm fixed in 7.3.20-1.module_el8.5.0+152+112d3b8c

▤

Related CVEs

CVEs linked to this one by a shared weakness (CWE) or affected product - joins on data already in the engine, with the reason shown per row.

CVE-2019-8275 UltraVNC revision 1211 has multiple improper null termination vulnerabilities in... same CWE-170 CRITICAL CVE-2019-11044 In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0 on Windows, PHP... same CWE-170 LOW CVE-2019-11045 In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP DirectoryI... same CWE-170 LOW CVE-2020-14323 A null pointer dereference flaw was found in samba's Winbind service in versions... same CWE-170 MEDIUM CVE-2001-1246 PHP 4.0.5 through 4.1.0 in safe mode does not properly cleanse the 5th parameter... 1 same product CVE-2002-0985 Argument injection vulnerability in the mail function for PHP 4.x to 4.2.2 may a... same product CVE-2002-2215 The imap_header function in the IMAP functionality for PHP before 4.3.0 allows r... same product CVE-2003-0442 Cross-site scripting (XSS) vulnerability in the transparent SID support capabili... 1 same product

📦

Fixed versions by distribution

The package version that resolves this CVE on each Linux distribution, from the vendor’s published security data. fixed in shows a patched version exists; open means the package is listed as affected with no fix yet.

oracle allapcu-panel open
oracle alllibzip open
oracle alllibzip-devel open
oracle alllibzip-tools open
oracle allphp fixed in 0:7.3.20-1.module+el8.2.0+7784+4033621d
oracle allphp-bcmath open
oracle allphp-cli open
oracle allphp-common open
oracle allphp-dba open
oracle allphp-dbg open
oracle allphp-devel fixed in 0:7.3.20-1.module+el8.2.0+7784+4033621d
oracle allphp-embedded fixed in 0:7.3.20-1.module+el8.2.0+7784+4033621d
oracle allphp-enchant fixed in 0:7.3.20-1.module+el8.2.0+7784+4033621d
oracle allphp-fpm open
oracle allphp-gd fixed in 0:7.3.20-1.module+el8.2.0+7784+4033621d
oracle allphp-gmp fixed in 0:7.3.20-1.module+el8.2.0+7784+4033621d
oracle allphp-intl open
oracle allphp-json fixed in 0:7.3.20-1.module+el8.2.0+7784+4033621d
oracle allphp-ldap open
oracle allphp-mbstring fixed in 0:7.3.20-1.module+el8.2.0+7784+4033621d
oracle allphp-mysqlnd open
oracle allphp-odbc open
oracle allphp-opcache open
oracle allphp-pdo open
oracle allphp-pear fixed in 1:1.10.9-1.module+el8.2.0+5569+98c8b30d
oracle allphp-pecl-apcu open
oracle allphp-pecl-apcu-devel open
oracle allphp-pecl-rrd fixed in 0:2.0.1-1.module+el8.2.0+5569+98c8b30d
oracle allphp-pecl-xdebug fixed in 0:2.8.0-1.module+el8.2.0+5569+98c8b30d
oracle allphp-pecl-zip fixed in 0:1.15.4-1.module+el8.2.0+5569+98c8b30d
oracle allphp-pgsql fixed in 0:7.3.20-1.module+el8.2.0+7784+4033621d
oracle allphp-process open
oracle allphp-recode open
oracle allphp-snmp open
oracle allphp-soap open
oracle allphp-xml open
oracle allphp-xmlrpc open
rhel 8apcu-panel fixed in 0:5.1.17-1.module+el8.1.0+3189+a1bff096
rhel 8libzip fixed in 0:1.5.2-1.module+el8.1.0+3189+a1bff096
rhel 8libzip-devel open
rhel 8libzip-tools open
rhel 8php fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-bcmath open
rhel 8php-cli open
rhel 8php-common fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-dba open
rhel 8php-dbg fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-devel fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-embedded open
rhel 8php-enchant open
rhel 8php-fpm fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-gd open
rhel 8php-gmp fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-intl fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-json fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-ldap fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-mbstring fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-mysqlnd open
rhel 8php-odbc fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-opcache open
rhel 8php-pdo open
rhel 8php-pear fixed in 1:1.10.9-1.module+el8.1.0+3189+a1bff096
rhel 8php-pecl-apcu fixed in 0:5.1.17-1.module+el8.1.0+3189+a1bff096
rhel 8php-pecl-apcu-devel fixed in 0:5.1.17-1.module+el8.1.0+3189+a1bff096
rhel 8php-pecl-rrd open
rhel 8php-pecl-xdebug open
rhel 8php-pecl-zip open
rhel 8php-pgsql open
rhel 8php-process open
rhel 8php-recode fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-snmp fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-soap open
rhel 8php-xml fixed in 0:7.3.20-1.module+el8.2.0+7373+b272fdef
rhel 8php-xmlrpc open
suse sle15apache2-mod_php7 fixed in 0:7.2.34-150000.4.103.1
suse sle15libtidy-devel fixed in 0:5.4.0-3.2.1
suse sle15libtidy5 fixed in 0:5.4.0-3.2.1
suse sle15php7 fixed in 0:7.2.34-150000.4.103.1
suse sle15php7-bcmath fixed in 0:7.2.34-150000.4.103.1
suse sle15php7-bz2 fixed in 0:7.2.34-150000.4.103.1

⚑

Vendor Advisories

suse-csafSUSE-SU-2022:4067-1
suse-csafrhsa-2020_3662
suse-csafSUSE-SU-2020:1714-1
suse-csafSUSE-SU-2020:1546-1
rhsaRHSA-2020:3662Moderate
rhsaRHSA-2020:5275Moderate
suse-csafopenSUSE-SU-2020:0642-1
usnUSN-4330-2
suse-csafSUSE-SU-2020:1199-1
usnUSN-4330-1
cisa-csafcisa-csaf-csaf_files-OT-white-2026-icsa-26-027-02