CVE-2019-9670

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 1.000 · 100 %ileexploit · weaponizedEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 5 exploits · weaponized

Likely / severe?

100.0% (100th) EPSS

CVSS 7.5 · high

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2022-01-10remediate by 2022-07-10

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-26

Synacor Zimbra Collaboration Suite (ZCS) Improper Restriction of XML External Entity Reference

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.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-611USprimaryCWE-611US

exploits (5)

Public proof-of-concept and weaponised exploit code.

exploit/linux/http/zimbra_xxe_rceZimbra Collaboration Autodiscover Servlet XXE and ProxyServlet SSRFweaponized · metasploit
EDB-46693Zimbra Collaboration - Autodiscover Servlet XXE and ProxyServlet SSRF (Metasploit)functional · exploit_db
Cappricio-Securities/CVE-2019-9670mailboxd 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.PoC · poc_in_github
attackgithub/Zimbra-RCEZimbra RCE CVE-2019-9670PoC · poc_in_github
rek7/Zimbra-RCEZimbra RCE PoC - CVE-2019-9670 XXE/SSRFPoC · poc_in_github

affected products (4)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Zimbra Inc. Zimbra Collaboration Suite≤ 8.7.11 Patch10fstec_bduRU
synacor zimbra collaboration suite8.7.0 → 8.7.11nvdUScpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*
synacor zimbra collaboration suite= 8.7.11nvdUScpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:*

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2019-05-29modified 2026-06-17

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+1515 more

references (23)

External citations — patches, advisories, analysis.

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