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CVE-2022-37393

36
FAUCET Score

CVE-2022-37393 is a high-severity vulnerability affecting Zimbra Collaboration, allowing the zimbra user to execute the zmslapd binary as root with arbitrary parameters. This permits loading user-defined configuration files, including malicious .so plugins, which also execute with root privileges. With a CVSS score of 7.8, the vulnerability has a local attack vector with low complexity, enabling high impact to confidentiality, integrity, and availability. While not on the KEV catalog, exploit code is publicly available via a Metasploit module, and it has garnered significant community discussion and media coverage, indicating active interest and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
8.7.6CPE matchmatch criteria
cpe:2.3:a:zimbra:collaboration:8.7.6:*:*:*:*:*:*:*
8.7.7CPE matchmatch criteria
cpe:2.3:a:zimbra:collaboration:8.7.7:*:*:*:*:*:*:*
8.7.9CPE matchmatch criteria
cpe:2.3:a:zimbra:collaboration:8.7.9:*:*:*:*:*:*:*
8.7.10CPE matchmatch criteria
cpe:2.3:a:zimbra:collaboration:8.7.10:*:*:*:*:*:*:*
8.7.11CPE matchmatch criteria
cpe:2.3:a:zimbra:collaboration:8.7.11:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.75%
Probability of exploitation in next 30 days
EPSS Percentile
75.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: Zimbra zmslapd arbitrary module load · Oct 27, 2021
This CVE's current EPSS score of 0.0175 is in the 96th percentile among its peer group of 17,061 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

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

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

attackerkb.com / topics/92AeLOE1M1/cve-2022-37393/rapid7-analysis
ExploitThird Party Advisory
darrenmartyn.ie / 2021/10/27/zimbra-zmslapd-local-root-exploit
ExploitThird Party Advisory
github.com / rapid7/metasploit-framework/pull/16807
ExploitPatchThird Party Advisory