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NVD / CVE Program· CNA mitre

CVE-2011-2166: script-login in Dovecot 2.0.x before 2.0.13 does not follow the user and group configuration settings, which might allow remote…

MediumCVSS 6.5 · v2.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 27/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2% (FIRST EPSS); higher than 81.1% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: dovecot (Debian:12) 1:2.0.13-1; dovecot (Red Hat:enterprise_linux:6::server) 1:2.0.9-5.el6; dovecot-debuginfo (Red Hat:enterprise_linux:6::server) 1:2.0.9-5.el6.

Low priority for now. Upgrade to dovecot (Debian:12) 1:2.0.13-1; dovecot (Red Hat:enterprise_linux:6::server) 1:2.0.9-5.el6; dovecot-debuginfo (Red Hat:enterprise_linux:6::server) 1:2.0.9-5.el6 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

script-login in Dovecot 2.0.x before 2.0.13 does not follow the user and group configuration settings, which might allow remote authenticated users to bypass intended access restrictions by leveraging a script.

Published
May 24, 2011
Updated
Jun 16, 2026
EPSS
2.0% · 81th percentile

Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.0%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
dovecotdovecot

Using dovecot? Add it to your stack and be the first to know about CVEs like this one. (Email server)

Watch new CVEs for dovecot

When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or is weaponized

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every Monday

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • dovecot dovecot2.0.0
  • dovecot dovecot2.0.1
  • dovecot dovecot2.0.10
  • dovecot dovecot2.0.11
  • dovecot dovecot2.0.12
  • dovecot dovecot2.0.2
  • dovecot dovecot2.0.3
  • dovecot dovecot2.0.4
+5 more rows
  • dovecot dovecot2.0.5
  • dovecot dovecot2.0.6
  • dovecot dovecot2.0.7
  • dovecot dovecot2.0.8
  • dovecot dovecot2.0.9

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12dovecotbefore 1:2.0.13-11:2.0.13-1
Red Hat:enterprise_linux:6::serverdovecotbefore 1:2.0.9-5.el61:2.0.9-5.el6
Red Hat:enterprise_linux:6::serverdovecot-debuginfobefore 1:2.0.9-5.el61:2.0.9-5.el6
Red Hat:enterprise_linux:6::serverdovecot-develbefore 1:2.0.9-5.el61:2.0.9-5.el6
Red Hat:enterprise_linux:6::serverdovecot-mysqlbefore 1:2.0.9-5.el61:2.0.9-5.el6
Red Hat:enterprise_linux:6::serverdovecot-pgsqlbefore 1:2.0.9-5.el61:2.0.9-5.el6
Red Hat:enterprise_linux:6::serverdovecot-pigeonholebefore 1:2.0.9-5.el61:2.0.9-5.el6

Same product

dovecot: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-11500In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for quoted strings.
    58Plan
  • CVE-2020-7046lib-smtp in submission-login and lmtp in Dovecot 2.3.9 before 2.3.9.3 mishandles truncated UTF-8 data in command parameters, as…
    45Plan
  • CVE-2016-8652The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash)…
    37Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2010-3780Oct 6, 2010 · Dovecot 1.2.x before 1.2.15 allows remote authenticated users to cause a denial of service (master process outage) by simultaneously…
    17Monitor
  • ← EarlierCVE-2011-1929May 24, 2011 · lib-mail/message-header-parser.c in Dovecot 1.2.x before 1.2.17 and 2.0.x before 2.0.13 does not properly handle '\0' characters in header…
    21Monitor
  • Later →CVE-2011-2167May 24, 2011 · script-login in Dovecot 2.0.x before 2.0.13 does not follow the chroot configuration setting, which might allow remote authenticated users…
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:dovecot1:2.0.13-1 · Debian:12Package registry (OSV)
red hat:dovecot1:2.0.9-5.el6 · Red Hat:enterprise_linux:6::serverPackage registry (OSV)
red hat:dovecot-debuginfo1:2.0.9-5.el6 · Red Hat:enterprise_linux:6::serverPackage registry (OSV)
red hat:dovecot-devel1:2.0.9-5.el6 · Red Hat:enterprise_linux:6::serverPackage registry (OSV)
red hat:dovecot-mysql1:2.0.9-5.el6 · Red Hat:enterprise_linux:6::serverPackage registry (OSV)
red hat:dovecot-pgsql1:2.0.9-5.el6 · Red Hat:enterprise_linux:6::serverPackage registry (OSV)
red hat:dovecot-pigeonhole1:2.0.9-5.el6 · Red Hat:enterprise_linux:6::serverPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
P · data can be read
Integrity
P · data or configuration can be modified
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
P
Integrity impact
P
Availability impact
P

Weakness class (CWE)

CWE-16 · Configuration

CVSS vector

AV:N/AC:L/Au:S/C:P/I:P/A:P

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records