CVE-2009-3611

common/snapshots.py in Back In Time (aka backintime) 0.9.26 changes certain permissions to 0777...

7.1 HighFix available

common/snapshots.py in Back In Time (aka backintime) 0.9.26 changes certain permissions to 0777 before deleting the files in an old backup snapshot, which allows local users to obtain sensitive information by reading these files, or interfere with backup integrity by modifying files that are shared across snapshots.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

0.30%Down 1.0 points since Feb 4, 2022

What each source reports

NVD Score used 7.1

Record: CVE-2009-3611
CVSS 3.1: 7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0: 3.6 LowAV:L/AC:L/Au:N/C:P/I:P/A:N
Weakness: CWE-732
Updated: 2026-11-02

CVE List No score

Record: CVE-2009-3611
Updated: 2026-11-02

EUVDEUVD-2009-3592 No score

Record: EUVD-2009-3592
Updated: 2026-11-03

GitHub AdvisoriesGHSA-vvf9-jwf6-834q 7.1

common/snapshots.py in Back In Time (aka backintime) 0.9.26 changes certain permissions to 0777...

Record: GHSA-vvf9-jwf6-834q
CVSS 3.1: 7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-732
Updated: 2026-11-02

OSV 7.1

Record: CVE-2009-3611
CVSS 3.1: 7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2009-3611 7.1

Record: DEBIAN-CVE-2009-3611
CVSS 3.1: 7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`backintime` Debian:12	before 0.9.26-3	0.9.26-3
`backintime` Debian:13	before 0.9.26-3	0.9.26-3
`backintime` Debian:14	before 0.9.26-3	0.9.26-3

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-3611 is a high vulnerability (CVSS 7.1) in Le-web Backintime, published October 26, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 23rd percentile. Fixed in backintime 0.9.26-3.

References

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