CVE-2019-9670
Confirmed PUBLISHEDmailboxd component in Synacor Zimbra Collaboration Suite 8.7.x before 8.7.11p10 has an XML External Entity injection (XXE) vulnerability, as...
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
mailboxd component in Synacor Zimbra Collaboration Suite 8.7.x before 8.7.11p10 has an XML External Entity injection (XXE) vulnerability, as demonstrated by Autodiscover/Autodiscover.xml.
- CVE Published
- May 29, 2019
- Exploitation Reported
- Jan 10, 2022
- CVSS
- 9.8 Critical
- EPSS
- 100.0%
CVE References
- 46693 exploit-db.com · Exploit https://www.exploit-db.com/exploits/46693/
- wiki.zimbra.com/wiki/Zimbra_Security_Advisories wiki.zimbra.com · CVE Record https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- bugzilla.zimbra.com/show_bug.cgi bugzilla.zimbra.com · CVE Record https://bugzilla.zimbra.com/show_bug.cgi?id=109129
- rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce rapid7.com · CVE Record http://www.rapid7.com/db/modules/exploit/linux/http/zimbra_xxe_rce
- packetstormsecurity.com/files/152487/Zimbra-Collaboration-Autodiscov... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/152487/Zimbra-Collaboration-Auto...
Show 1 more reference
- isc.sans.edu/forums/diary/CVE20199670+Zimbra+Collaboratio... isc.sans.edu · CVE Record https://isc.sans.edu/forums/diary/CVE20199670+Zimbra+Collaboration+Su...
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2022-01-10 00:00 UTC |
| The Shadowserver | 2026-05-30 00:00 UTC |
Scanner Artifacts
Scanner and exploit-framework references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Metasploit | https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/zimbra_xxe_rce.rb | Apr 28, 2025 |
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2019/CVE-2019-9670.yaml | Apr 25, 2025 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
Exploitation Status
Exploited in the wild
Recorded 2022-01-10 00:00:00 UTC · CISA
Proof of concept available
Recorded 2024-04-24 12:32:18 UTC · GitHub
Weaknesses (CWE)
-
Improper Restriction of XML External Entity Reference
Scanner Integrations
Nuclei, Metasploit, and other scanner references for this CVE are listed on the Detection tab.
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2024-04-24 12:32:18 UTC · 0 stars
mailboxd component in Synacor Zimbra Collaboration Suite 8.7.x before 8.7.11p10 has an XML External Entity injection (XXE) vulnerability, as demonstrated by Autodiscover/Autodiscover.xml.
nuclei · Created Unknown
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
00:00 UTC 2 months ago00:00 UTC · 2 months ago
KEV confirmed by The Shadowserver
Exploitation attested by an external source
-
15:02 UTC over 1 year ago15:02 UTC · over 1 year ago
Metasploit module available
Exploit module available
-
00:00 UTC over 1 year ago00:00 UTC · over 1 year ago
Nuclei template available
Scanner coverage available
-
12:32 UTC over 2 years ago12:32 UTC · over 2 years ago
Public PoC available
Public proof-of-concept code published
-
00:00 UTC over 4 years ago00:00 UTC · over 4 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
21:04 UTC about 7 years ago21:04 UTC · about 7 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 7 years ago00:00 UTC · over 7 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2019-9670
{
"cve_id": "CVE-2019-9670",
"title": "mailboxd component in Synacor Zimbra Collaboration Suite 8.7.x before 8.7.11p...",
"affected_vendor": "Synacor",
"affected_product": "Zimbra Collaboration Suite",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 9.8,
"epss_score": 0.99986,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}