CVE-2011-4125

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 27% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

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

A untrusted search path issue was found in Calibre at devices/linux_mount_helper.c leading to the ability of unprivileged users to execute any program as root.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
80.7%
KEV
Not listed

Published

October 27, 2021

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Jun 5, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

oss-security - CVE request for Calibre

https://www.openwall.com/lists/oss-security/2011/11/02/2
generic🟡 PoC Available

Security [LWN.net]

https://lwn.net/Articles/464824/
generic

calibre-mount-helper-exploit - The Calibrer Assault Mount series of exploits against Calibre's numerous suid mount helper mistakes.

https://git.zx2c4.com/calibre-mount-helper-exploit/about/
generic🟡 PoC Available

Bug #885027 “SUID Mount Helper has 5 Major Vulnerabilities” : Bugs : calibre

https://bugs.launchpad.net/calibre/+bug/885027

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 43× 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.

  1. 2026-07-11 08:22 UTCEPSS rescore
  2. 2026-07-11 08:22 UTCEPSS rescore
  3. 2026-07-08 15:10 UTCEPSS rescore
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  5. 2026-07-06 16:23 UTCEPSS rescore
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  9. 2026-07-04 06:27 UTCEPSS rescore
  10. 2026-07-02 14:01 UTCEPSS rescore
  11. 2026-07-01 15:02 UTCEPSS rescore
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  13. 2026-06-30 23:19 UTCEPSS rescore
  14. 2026-06-30 23:19 UTCEPSS rescore
  15. 2026-06-30 09:00 UTCOSV refresh
  16. 2026-06-29 14:02 UTCEPSS rescore
  17. 2026-06-28 14:03 UTCEPSS rescore
  18. 2026-06-28 04:53 UTCEPSS rescore
  19. 2026-06-28 04:52 UTCEPSS rescore
  20. 2026-06-27 03:05 UTCEPSS rescore
  21. 2026-06-27 03:05 UTCEPSS rescore
  22. 2026-06-25 13:46 UTCEPSS rescore
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  24. 2026-06-24 14:02 UTCEPSS rescore
  25. 2026-06-23 21:30 UTCEPSS rescore
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  1. 2026-06-23 21:30 UTCEPSS rescore
  2. 2026-06-22 14:22 UTCEPSS rescore
  3. 2026-06-22 14:22 UTCEPSS rescore
  4. 2026-06-19 19:22 UTCEPSS rescore
  5. 2026-06-19 19:22 UTCEPSS rescore
  6. 2026-06-18 17:49 UTCEPSS rescore
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  8. 2026-06-17 17:49 UTCEPSS rescore
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  17. 2026-06-12 23:08 UTCEPSS rescore
  18. 2026-06-12 18:10 UTCOSV refresh
  19. 2026-06-11 13:56 UTCEPSS rescore
  20. 2026-06-10 22:14 UTCEPSS rescore
  21. 2026-06-10 13:17 UTCEPSS rescore
  22. 2026-06-08 14:14 UTCEPSS rescore
  23. 2026-06-08 14:14 UTCEPSS rescore
  24. 2026-06-07 15:22 UTCEPSS rescore
  25. 2026-06-07 15:22 UTCEPSS rescore
  26. 2026-06-06 13:45 UTCEPSS rescore
  27. 2026-06-06 13:44 UTCEPSS rescore
  28. 2026-06-05 22:44 UTCEPSS rescore
  29. 2026-06-05 06:08 UTCEPSS rescore
  30. 2026-06-05 06:07 UTCEPSS rescore
  31. 2026-06-04 13:09 UTCEPSS rescore
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  35. 2026-06-01 13:49 UTCEPSS rescore
  36. 2026-06-01 13:49 UTCEPSS rescore
  37. 2026-05-31 22:28 UTCEPSS rescore
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  39. 2026-05-31 00:14 UTCEPSS rescore
  40. 2026-05-31 00:14 UTCEPSS rescore
  41. 2026-05-29 13:41 UTCEPSS rescore
  42. 2026-05-29 13:40 UTCEPSS rescore
  43. 2026-05-28 13:42 UTCEPSS rescore
  44. 2026-05-28 13:42 UTCEPSS rescore
  45. 2026-05-28 13:42 UTCEPSS rescore
  46. 2026-05-27 13:38 UTCEPSS rescore
  47. 2026-05-27 13:38 UTCEPSS rescore
  48. 2026-05-26 13:41 UTCEPSS rescore
  49. 2026-05-26 13:41 UTCEPSS rescore
  50. 2026-05-26 08:26 UTCEG score recompute
  51. 2026-05-26 08:26 UTCGHSA enrichment
  52. 2026-05-26 07:16 UTCEPSS rescore
  53. 2026-05-26 07:16 UTCEPSS rescore
  54. 2026-05-24 16:43 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2011-4125?
CVE-2011-4125 is a critical vulnerability published on October 27, 2021. A untrusted search path issue was found in Calibre at devices/linuxmounthelper.c leading to the ability of unprivileged users to execute any program as root.
When was CVE-2011-4125 disclosed?
CVE-2011-4125 was first published in the National Vulnerability Database on October 27, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-4125 actively exploited?
CVE-2011-4125 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 80.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2011-4125?
CVE-2011-4125 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2011-4125?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-4125, 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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