CVE-2016-4861: The (1) order and (2) group methods in Zend_Db_Select in the Zend Framework before 1.12.20 might allow remote

Q: How do I fix CVE-2016-4861?

fedora: mitigate or apply the listed mitigation; zend framework: upgrade to newer than 1.12.19. Exact commands for each OS are on this page.

Q: Is CVE-2016-4861 being exploited?

CVE-2016-4861 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2016-4861 affect?

CVE-2016-4861 affects fedora, zend framework. Severity is critical (CVSS 9.8). The (1) order and (2) group methods in Zend_Db_Select in the Zend Framework before 1.12.20 might allow remote attackers to conduct SQL injection attacks by leveraging failure to remove comments from an SQL statement before validation.

Q: How urgent is CVE-2016-4861?

Priority 67/100. Critical severity; EPSS top 9%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEMITIGATEUPGRADE

CVE-2016-4861 is a critical-severity flaw (CVSS 9.8) affecting fedora, zend framework. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The (1) order and (2) group methods in Zend_Db_Select in the Zend Framework before 1.12.20 might allow remote attackers to conduct SQL injection attacks by leveraging failure to remove comments from an SQL statement before validation.

Why this priority

Critical severity
EPSS top 9%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	4.1% (top 9%)
CISA exploited list	No
Weakness	CWE-89
Published	2017-02-17
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: fedoraproject · zend

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-02-17 02:59 UTCPublished CVE record published
2026-06-17 00:48 UTCUpdated Record last modified

fedoraproject fedora MITIGATE

Affected: 23 · 24 · 25

Fixed in: no fixed release known

Safe to downgrade to: a release before 23

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

zend zend framework UPGRADE

Affected: <= 1.12.19

Fixed in: newer than 1.12.19

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy zend-framework || rpm -q zend-framework || zend-framework --version

2. UPGRADE to newer than 1.12.19 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade zend-framework

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade zend-framework

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2016-4861?

fedora: mitigate or apply the listed mitigation; zend framework: upgrade to newer than 1.12.19. Exact commands for each OS are on this page.

Is CVE-2016-4861 being exploited?

CVE-2016-4861 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2016-4861 affect?

CVE-2016-4861 affects fedora, zend framework. Severity is critical (CVSS 9.8). The (1) order and (2) group methods in Zend_Db_Select in the Zend Framework before 1.12.20 might allow remote attackers to conduct SQL injection attacks by leveraging failure to remove comments from an SQL statement before validation.

How urgent is CVE-2016-4861?

Priority 67/100. Critical severity; EPSS top 9%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

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References

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