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Weekly Signal
Live intelligence Updated 21 Aug 2026 · 22:11 UTC

Canonical, Debian, Exim +1 more · Ubuntu Linux, Debian Linux, Exim +1 more

CVE-2010-4345

Exim Privilege Escalation Vulnerability

Recommended action

Validate affected assets and exposure now, then remediate on an accelerated schedule. Red Hat Security patch Show Bug.cgi

View response plan
CVSS7.8
EPSS18.1%
KEVYes
ExploitationConfirmed exploitation
RemediationExplicit patch identified ↓

Assessment

Why it matters

CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 18.1%; technical severity is CVSS 7.8.

Exim 4.72 and earlier allows local users to gain privileges by leveraging the ability of the exim user account to specify an alternate configuration file with a directive that contains arbitrary commands, as demonstrated by the spool_directory directive.

Who should care

  • Teams operating Ubuntu Linux, Debian Linux, Exim +1 more
  • Vulnerability and exposure management teams
  • Security operations teams monitoring exploitation activity

Response plan

What I would do

  1. Confirm whether Ubuntu Linux, Debian Linux, Exim +1 more is present in the environment.
  2. Identify affected versions and establish whether vulnerable services are exposed or reachable.
  3. Red Hat Security patch Show Bug.cgi
  4. Review relevant security telemetry for evidence of attempted or successful exploitation.
  5. Document the remediation decision and track it to verified completion.

Treatment intelligence

Remediation intelligence

Not yet verified

Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.

Verification noteAutomated link verification has not completed for this guidance yet.

Patch

Advisory

Required Action

Technical details

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-264
Affected versions
Canonical Ubuntu Linux (Version 6.06 | Version 8.04 | Version 9.10 | Version 10.04); Debian Debian Linux (Version 5.0); Exim Exim (End Including 4.72); Opensuse Opensuse (Version 11.1 | Version 11.2 | Version 11.3)
Fixed versions
No explicit fixed version is currently recorded.
Published
14 December 2010
Attack vector
Local
Privileges required
Low
User interaction
None

Signal timeline

  1. CVE published
  2. Added to CISA KEV
  3. Latest EPSS score: 18.1%
  4. Signal calculated at 71

External references

Live public intelligence This assessment combines public-source evidence. Validate the affected product, version and exposure against your own environment before making a risk decision.