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NVD / CVE Program· CNA php

CVE-2020-7062: Null Pointer Dereference in PHP Session Upload Progress

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 3.5% (FIRST EPSS); higher than 89.4% 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.
  • Fixed version: apcu-panel (AlmaLinux:8) 5.1.17-1.module_el8.3.0+2009+b272fdef; libzip (AlmaLinux:8) 1.5.2-1.module_el8.4.0+2229+b272fdef, 1.5.2-1.module_el8.3.0+2009+b272fdef, 1.5.2-1.module_el8.5.0+152+112d3b8c; libzip-devel (AlmaLinux:8) 1.5.2-1.module_el8.4.0+2229+b272fdef, 1.5.2-1.module_el8.5.0+152+112d3b8c, 1.5.2-1.module_el8.3.0+2009+b272fdef.

Low priority for now. Upgrade to apcu-panel (AlmaLinux:8) 5.1.17-1.module_el8.3.0+2009+b272fdef; libzip (AlmaLinux:8) 1.5.2-1.module_el8.4.0+2229+b272fdef, 1.5.2-1.module_el8.3.0+2009+b272fdef, 1.5.2-1.module_el8.5.0+152+112d3b8c; libzip-devel (AlmaLinux:8) 1.5.2-1.module_el8.4.0+2229+b272fdef, 1.5.2-1.module_el8.5.0+152+112d3b8c, 1.5.2-1.module_el8.3.0+2009+b272fdef 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

In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when using file upload functionality, if upload progress tracking is enabled, but session.upload_progress.cleanup is set to 0 (disabled), and the file upload fails, the upload procedure would try to clean up data that does not exist and encounter null pointer dereference, which would likely lead to a crash.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Feb 27, 2020
Updated
Jun 16, 2026
EPSS
3.5% · 89th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.5%

CNA vs NVD score

NVD
7.5
CNA · php
7.5
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
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  • A fix has been released

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

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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.

VendorProduct
phpphp
opensuseleap
debiandebian linux
canonicalubuntu linux

Using php? Add it to your stack and be the first to know about CVEs like this one. (PHP)

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When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or gets exploit code

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Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
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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.

  • php php7.2.0 and later · up to 7.2.27 inclusive
  • php php7.3.0 and later · up to 7.3.14 inclusive
  • php php7.4.0 and later · up to 7.4.2 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (php). Independent of NVD's CPE analysis and usually ahead of it.

  • PHP Group PHP

    • 7.3.x and later · before 7.3.15affected
    • 7.4.x and later · before 7.4.3affected
    • 7.2.x and later · before 7.2.28affected

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:8apcu-panelbefore 5.1.17-1.module_el8.3.0+2009+b272fdef5.1.17-1.module_el8.3.0+2009+b272fdef
AlmaLinux:8libzipbefore 1.5.2-1.module_el8.4.0+2229+b272fdef1.5.2-1.module_el8.4.0+2229+b272fdef
AlmaLinux:8libzipbefore 1.5.2-1.module_el8.3.0+2009+b272fdef1.5.2-1.module_el8.3.0+2009+b272fdef
AlmaLinux:8libzipbefore 1.5.2-1.module_el8.5.0+152+112d3b8c1.5.2-1.module_el8.5.0+152+112d3b8c
AlmaLinux:8libzip-develbefore 1.5.2-1.module_el8.4.0+2229+b272fdef1.5.2-1.module_el8.4.0+2229+b272fdef
AlmaLinux:8libzip-develbefore 1.5.2-1.module_el8.5.0+152+112d3b8c1.5.2-1.module_el8.5.0+152+112d3b8c
AlmaLinux:8libzip-develbefore 1.5.2-1.module_el8.3.0+2009+b272fdef1.5.2-1.module_el8.3.0+2009+b272fdef
AlmaLinux:8libzip-toolsbefore 1.5.2-1.module_el8.3.0+2009+b272fdef1.5.2-1.module_el8.3.0+2009+b272fdef
AlmaLinux:8libzip-toolsbefore 1.5.2-1.module_el8.4.0+2229+b272fdef1.5.2-1.module_el8.4.0+2229+b272fdef
AlmaLinux:8libzip-toolsbefore 1.5.2-1.module_el8.5.0+152+112d3b8c1.5.2-1.module_el8.5.0+152+112d3b8c
AlmaLinux:8phpbefore 7.3.20-1.module_el8.3.0+2009+b272fdef7.3.20-1.module_el8.3.0+2009+b272fdef
AlmaLinux:8phpbefore 7.3.20-1.module_el8.5.0+152+112d3b8c7.3.20-1.module_el8.5.0+152+112d3b8c
AlmaLinux:8phpbefore 7.3.20-1.module_el8.4.0+2229+b272fdef7.3.20-1.module_el8.4.0+2229+b272fdef
AlmaLinux:8php-bcmathbefore 7.3.20-1.module_el8.3.0+2009+b272fdef7.3.20-1.module_el8.3.0+2009+b272fdef
AlmaLinux:8php-bcmathbefore 7.3.20-1.module_el8.5.0+152+112d3b8c7.3.20-1.module_el8.5.0+152+112d3b8c
AlmaLinux:8php-bcmathbefore 7.3.20-1.module_el8.4.0+2229+b272fdef7.3.20-1.module_el8.4.0+2229+b272fdef
AlmaLinux:8php-clibefore 7.3.20-1.module_el8.3.0+2009+b272fdef7.3.20-1.module_el8.3.0+2009+b272fdef
AlmaLinux:8php-clibefore 7.3.20-1.module_el8.4.0+2229+b272fdef7.3.20-1.module_el8.4.0+2229+b272fdef
AlmaLinux:8php-clibefore 7.3.20-1.module_el8.5.0+152+112d3b8c7.3.20-1.module_el8.5.0+152+112d3b8c
AlmaLinux:8php-commonbefore 7.3.20-1.module_el8.3.0+2009+b272fdef7.3.20-1.module_el8.3.0+2009+b272fdef
AlmaLinux:8php-commonbefore 7.3.20-1.module_el8.4.0+2229+b272fdef7.3.20-1.module_el8.4.0+2229+b272fdef
AlmaLinux:8php-commonbefore 7.3.20-1.module_el8.5.0+152+112d3b8c7.3.20-1.module_el8.5.0+152+112d3b8c
AlmaLinux:8php-dbabefore 7.3.20-1.module_el8.5.0+152+112d3b8c7.3.20-1.module_el8.5.0+152+112d3b8c
AlmaLinux:8php-dbabefore 7.3.20-1.module_el8.3.0+2009+b272fdef7.3.20-1.module_el8.3.0+2009+b272fdef

+96

Same product

php: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-4577Argument Injection in PHP-CGIKEV
    99Now
  • CVE-2019-11043Underflow in PHP-FPM can lead to RCEKEV
    99Now
  • CVE-2012-1823sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not properly handle queKEV
    99Now

Published before and after this one in the same product

  • ← EarlierCVE-2014-3622Feb 19, 2020 · Use-after-free vulnerability in the add_post_var function in the Posthandler component in PHP 5.6.x before 5.6.1 might allow remote attacker
    40Plan
  • ← EarlierCVE-2020-7061Feb 27, 2020 · heap-buffer-overflow in phar_extract_file
    37Monitor
  • Later →CVE-2020-7063Feb 27, 2020 · Files added to tar with Phar::buildFromIterator have all-access permissions
    21Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
almalinux:apcu-panel5.1.17-1.module_el8.3.0+2009+b272fdef · AlmaLinux:8Package registry (OSV)
almalinux:libzip1.5.2-1.module_el8.5.0+152+112d3b8c · AlmaLinux:8Package registry (OSV)
almalinux:libzip-devel1.5.2-1.module_el8.4.0+2229+b272fdef · AlmaLinux:8Package registry (OSV)
almalinux:libzip-tools1.5.2-1.module_el8.5.0+152+112d3b8c · AlmaLinux:8Package registry (OSV)
almalinux:php7.3.20-1.module_el8.4.0+2229+b272fdef · AlmaLinux:8Package registry (OSV)
almalinux:php-bcmath7.3.20-1.module_el8.4.0+2229+b272fdef · AlmaLinux:8Package registry (OSV)
almalinux:php-cli7.3.20-1.module_el8.5.0+152+112d3b8c · AlmaLinux:8Package registry (OSV)
almalinux:php-common7.3.20-1.module_el8.3.0+2009+b272fdef · AlmaLinux:8Package registry (OSV)
almalinux:php-dba7.3.20-1.module_el8.5.0+152+112d3b8c · AlmaLinux:8Package registry (OSV)
almalinux:php-dbg7.3.20-1.module_el8.3.0+2009+b272fdef · AlmaLinux:8Package registry (OSV)
almalinux:php-devel7.3.20-1.module_el8.4.0+2229+b272fdef · AlmaLinux:8Package registry (OSV)
almalinux:php-embedded7.3.20-1.module_el8.3.0+2009+b272fdef · AlmaLinux:8Package registry (OSV)
alpine:php77.3.15-r0 · Alpine:v3.11Package registry (OSV)
debian:php55.6.40+dfsg-0+deb8u10 · Debian:8Package registry (OSV)
debian:php7.07.0.33-0+deb9u8 · Debian:9Package registry (OSV)
debian:php7.37.3.19-1~deb10u1 · Debian:10Package registry (OSV)
debian:php7.47.4.3-1 · Debian:11Package registry (OSV)
opensuse:php77.2.5-lp151.6.22.1 · openSUSE:Leap 15.1Package registry (OSV)
opensuse:php7-test7.2.5-lp151.6.22.1 · openSUSE:Leap 15.1Package registry (OSV)
red hat:apcu-panel0:5.1.17-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:libzip0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:libzip-debuginfo0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:libzip-debugsource0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:libzip-devel0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:libzip-tools0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:libzip-tools-debuginfo0:1.5.2-1.module+el8.1.0+3189+a1bff096 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:php0:7.3.20-1.module+el8.2.0+7373+b272fdef · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:php-bcmath0:7.3.20-1.module+el8.2.0+7373+b272fdef · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:php-bcmath-debuginfo0:7.3.20-1.module+el8.2.0+7373+b272fdef · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:php-cli0:7.3.20-1.module+el8.2.0+7373+b272fdef · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)

+11

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

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
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

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

nvd-primary

Attack context

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

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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

References

Show all references (6 more)

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

All records