CVE-2009-3611

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: LOW) published 2022-05-02. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

October 26, 2009

Last Modified

April 23, 2026

Advisory Details (6)

Auto-updated Sep 11, 2026
Patch available. Sources: redhat.
generic Patch Available

#543785 - backintime-common: backintime make world readable file in backup when it remove old backup - Debian Bug report logs

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=543785
redhat Patch Available

520210 – (CVE-2009-3611) CVE-2009-3611 backintime: makes all files world-readable in snapshot when removing it

https://bugzilla.redhat.com/show_bug.cgi?id=520210
generic

Bug #434256 “Sync backintime 0.9.26-3 (universe) from Debian uns...” : Bugs : backintime package : Ubuntu

https://bugs.launchpad.net/ubuntu/+source/backintime/+bug/434256
generic

'Re: [oss-security] CVE Request - backintime' - MARC

http://marc.info/?l=oss-security&m=125554894700336&w=2
generic

'[oss-security] CVE Request - backintime' - MARC

http://marc.info/?l=oss-security&m=125553645511436&w=2
generic

289047 – app-backup/backintime: Information disclosure when removing old backups (CVE-2009-3611)

http://bugs.gentoo.org/show_bug.cgi?id=289047

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
backintime—0.9.26-3—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
backintime—0.9.26-3—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
backintime—0.9.26-3—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
backintime—0.9.26-3—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 13× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 127 total refreshes for this CVE.

  1. 2026-09-17 19:20 UTCEPSS rescore
  2. 2026-09-15 03:04 UTCEPSS rescore
  3. 2026-09-14 01:19 UTCOSV refresh
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  1. 2026-07-23 14:14 UTCEPSS rescore
  2. 2026-07-23 01:00 UTCEG score recompute
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  48. 2026-06-19 02:43 UTCOSV refresh
  49. 2026-06-18 17:49 UTCEPSS rescore
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2009-3611?
CVE-2009-3611 is a high vulnerability published on October 26, 2009. 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…
When was CVE-2009-3611 disclosed?
CVE-2009-3611 was first published in the National Vulnerability Database on October 26, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-3611 actively exploited?
CVE-2009-3611 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 76.8% of all scored CVEs.
What is the CVSS score of CVE-2009-3611?
CVE-2009-3611 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2009-3611?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-3611, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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