CVE-2016-10034

Exp

The setFrom function in the Sendmail adapter in the zend-mail component before 2.4.11, 2.5.x, 2.6.x, and 2.7.x before 2.7.2, and Zend Framework before 2.4.11 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a \" (backslash double quote) in a crafted e-mail address.

Published: 2016-12-30 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]

NVD Status：Modified，CVE State: published

View at NVD, CVE.org, EUVD

Threat Intelligence & Risk Assessment for CVE-2016-10034

EPSS CVSS CWE GHSA Exploit-DB Affected OS Tracker

Conclusion & alert: CVE-2016-10034 is rated High Exploit Risk (83.6/100): CVSS Critical severity, with high exploitation likelihood (EPSS 38.44%, 98th percentile). Core evidence: 5 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2016-10034

EDB-ID	Source	Kind	Published	Link
42221	exploit_db	edb	2017-06-21	Exploit-DB ↗
40986	exploit_db	edb	2017-01-02	Exploit-DB ↗
40979	exploit_db	edb	2016-12-30	Exploit-DB ↗
—	nvd_ref	exploit_tag		Exploit-DB ↗
—	nvd_ref	exploit_tag		Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2016-10034

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	82.32%	38.44%	-43.88%
2	2026-03-04	67.86%	82.32%	+14.47%
3	2026-03-01	—	67.86%	—

Full EPSS history (49 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-10034

CVSS metrics for this CVE.

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
9.8	3.0	CRITICAL	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	5.9	[email protected]
7.5	2.0	HIGH	`AV:N/AC:L/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	10.0	6.4	[email protected]

Weakness enumeration for CVE-2016-10034

CWE-77 MITRE ↗

GitHub Security Advisory for CVE-2016-10034

GHSA-r9mw-gwx9-v3h5 · Severity: critical · Ecosystem: composer — zend-mail remote code execution via Sendmail adapter

OS Trackers for CVE-2016-10034

vendor	priority	summary	link
`gentoo`	normal	CVE-2016-10034: 1 GLSA(s) (201804-10), 1 atom(s) (dev-php/ZendFramework); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-10034
`ubuntu`	medium	CVE-2016-10034 medium priority: Ubuntu including 1 source packages (libphp-phpmailer), 5 status rows across 5 suites (precise, trusty, upstream, xenial, yakkety): not-affected 3, DNE 1, released 1.	https://ubuntu.com/security/CVE-2016-10034

Affected software / configurations for CVE-2016-10034

Vendor	Product	Version	Raw CPE
zend	zend_framework	<= 2.4.10	cpe:2.3:a:zend:zend_framework::::::::
zend	zend-mail	<= 2.4.10	cpe:2.3:a:zend:zend-mail::::::::
zend	zend-mail	2.5.0	cpe:2.3:a:zend:zend-mail:2.5.0:::::::*
zend	zend-mail	2.5.1	cpe:2.3:a:zend:zend-mail:2.5.1:::::::*
zend	zend-mail	2.5.2	cpe:2.3:a:zend:zend-mail:2.5.2:::::::*
zend	zend-mail	2.6.0	cpe:2.3:a:zend:zend-mail:2.6.0:::::::*
zend	zend-mail	2.6.1	cpe:2.3:a:zend:zend-mail:2.6.1:::::::*
zend	zend-mail	2.6.2	cpe:2.3:a:zend:zend-mail:2.6.2:::::::*
zend	zend-mail	2.7.0	cpe:2.3:a:zend:zend-mail:2.7.0:::::::*
zend	zend-mail	2.7.1	cpe:2.3:a:zend:zend-mail:2.7.1:::::::*

References for CVE-2016-10034

URL	Tags
http://www.securityfocus.com/bid/95144	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037539
https://framework.zend.com/security/advisory/ZF2016-04	Exploit Technical Description Vendor Advisory
https://legalhackers.com/advisories/ZendFramework-Exploit-ZendMail-Remote-Code-Exec-CVE-2016-10034-Vuln.html	Exploit Technical Description Third Party Advisory
https://security.gentoo.org/glsa/201804-10
https://www.exploit-db.com/exploits/40979/
https://www.exploit-db.com/exploits/40986/
https://www.exploit-db.com/exploits/42221/

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