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CVE-2020-29312

31
FAUCET Score

CVE-2020-29312 describes a critical remote code execution vulnerability in Zend Framework versions 3.1.3 and earlier, stemming from improper use of the unserialize function. This vulnerability carries a CVSS score of 9.8, indicating a critical risk with network-based exploitation, low attack complexity, and high impact on confidentiality, integrity, and availability. While the NVD description has been disputed regarding versioning and deprecation, the potential for arbitrary code execution remains significant. There is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or widespread community discussion, with only one mention observed.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1.3CPE matchmatch criteria
cpe:2.3:a:zend:zend_framework:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.26%
Probability of exploitation in next 30 days
EPSS Percentile
66.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0126 is in the 53rd percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cowtransfer.com / s/f9684f004d7149
Broken Link
github.com / zendframework/zendframework
Product