CVE-2015-8770

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 22%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

Directory traversal vulnerability in the set_skin function in program/include/rcmail_output_html.php in Roundcube before 1.0.8 and 1.1.x before 1.1.4 allows remote authenticated users with certain permissions to read arbitrary files or possibly execute arbitrary code via a .. (dot dot) in the _skin parameter to index.php.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
54(Track)
EG Risk 54/100SSVC: 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
Severity75% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
22%
EPSS %ILE
98%
KEV
Not listed

Published

January 29, 2016

Last Modified

June 17, 2026

References (24)

Affected Packages

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
roundcube—1.1.4+dfsg.1-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
roundcube—1.1.4+dfsg.1-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
roundcube—1.1.4+dfsg.1-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
roundcube—1.1.4+dfsg.1-1—
Debian:6.0(1)
PackageVulnerable rangeFixed inDependents
roundcube0.3.1-6, 0.3.1-6+dab6u10.3.1-6+deb6u1—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
roundcube0.7.2-9, 0.7.2-9+deb7u10.7.2-9+deb7u2—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 19× 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 137 total refreshes for this CVE.

  1. 2026-09-23 13:41 UTCEPSS rescore
  2. 2026-09-19 15:35 UTCEPSS rescore
  3. 2026-09-19 03:30 UTCOSV refresh
  4. 2026-09-18 19:22 UTCEPSS rescore
  5. 2026-09-17 19:21 UTCEPSS rescore
  6. 2026-09-15 03:05 UTCEPSS rescore
  7. 2026-09-13 16:41 UTCEPSS rescore
  8. 2026-09-12 14:55 UTCEPSS rescore
  9. 2026-09-11 09:31 UTCEPSS rescore
  10. 2026-09-10 09:26 UTCEPSS rescore
  11. 2026-09-07 15:56 UTCEPSS rescore
  12. 2026-09-06 13:42 UTCEPSS rescore
  13. 2026-09-04 13:55 UTCEPSS rescore
  14. 2026-09-02 14:07 UTCEPSS rescore
  15. 2026-09-01 13:48 UTCEPSS rescore
  16. 2026-09-01 03:31 UTCEPSS rescore
  17. 2026-08-31 06:55 UTCOSV refresh
  18. 2026-08-27 14:20 UTCEPSS rescore
  19. 2026-08-26 14:41 UTCEPSS rescore
  20. 2026-08-25 13:44 UTCEPSS rescore
  21. 2026-08-23 00:13 UTCEPSS rescore
  22. 2026-08-21 23:44 UTCEPSS rescore
  23. 2026-08-20 22:50 UTCEPSS rescore
  24. 2026-08-19 16:59 UTCEPSS rescore
  25. 2026-08-18 13:43 UTCEPSS rescore
Show 75 more
  1. 2026-08-16 14:51 UTCEPSS rescore
  2. 2026-08-16 02:09 UTCEPSS rescore
  3. 2026-08-15 01:25 UTCEPSS rescore
  4. 2026-08-14 13:54 UTCOSV refresh
  5. 2026-08-12 13:46 UTCEPSS rescore
  6. 2026-08-11 13:36 UTCEPSS rescore
  7. 2026-08-08 16:32 UTCEPSS rescore
  8. 2026-08-07 16:22 UTCEPSS rescore
  9. 2026-08-06 13:42 UTCEPSS rescore
  10. 2026-08-05 19:12 UTCEPSS rescore
  11. 2026-08-04 15:04 UTCEPSS rescore
  12. 2026-08-01 04:11 UTCEPSS rescore
  13. 2026-07-30 02:54 UTCOSV refresh
  14. 2026-07-30 01:26 UTCEPSS rescore
  15. 2026-07-30 01:26 UTCEPSS rescore
  16. 2026-07-28 15:31 UTCEPSS rescore
  17. 2026-07-26 14:50 UTCEPSS rescore
  18. 2026-07-25 14:13 UTCEPSS rescore
  19. 2026-07-24 14:13 UTCEPSS rescore
  20. 2026-07-23 14:14 UTCEPSS rescore
  21. 2026-07-23 01:20 UTCEG score recompute
  22. 2026-07-23 00:21 UTCEG score recompute
  23. 2026-07-22 22:00 UTCEG score recompute
  24. 2026-07-22 14:04 UTCEPSS rescore
  25. 2026-07-21 15:21 UTCEPSS rescore
  26. 2026-07-21 15:21 UTCEPSS rescore
  27. 2026-07-20 17:03 UTCEPSS rescore
  28. 2026-07-19 02:26 UTCEPSS rescore
  29. 2026-07-19 02:26 UTCEPSS rescore
  30. 2026-07-18 10:00 UTCEPSS rescore
  31. 2026-07-16 16:59 UTCEPSS rescore
  32. 2026-07-15 16:54 UTCEPSS rescore
  33. 2026-07-15 16:54 UTCEPSS rescore
  34. 2026-07-15 01:56 UTCEPSS rescore
  35. 2026-07-13 22:26 UTCEPSS rescore
  36. 2026-07-13 22:26 UTCEPSS rescore
  37. 2026-07-12 11:38 UTCOSV refresh
  38. 2026-07-12 05:42 UTCEPSS rescore
  39. 2026-07-11 08:23 UTCEPSS rescore
  40. 2026-07-09 19:05 UTCEPSS rescore
  41. 2026-07-09 19:05 UTCEPSS rescore
  42. 2026-07-08 15:10 UTCEPSS rescore
  43. 2026-07-07 13:42 UTCEPSS rescore
  44. 2026-07-07 13:42 UTCEPSS rescore
  45. 2026-07-06 16:24 UTCEPSS rescore
  46. 2026-07-06 02:20 UTCEPSS rescore
  47. 2026-07-05 02:26 UTCEPSS rescore
  48. 2026-07-01 15:02 UTCEPSS rescore
  49. 2026-06-30 23:19 UTCEPSS rescore
  50. 2026-06-30 23:19 UTCEPSS rescore
  51. 2026-06-29 14:03 UTCEPSS rescore
  52. 2026-06-29 14:03 UTCEPSS rescore
  53. 2026-06-28 14:04 UTCEPSS rescore
  54. 2026-06-28 04:53 UTCEPSS rescore
  55. 2026-06-27 03:05 UTCEPSS rescore
  56. 2026-06-25 13:47 UTCEPSS rescore
  57. 2026-06-25 13:47 UTCEPSS rescore
  58. 2026-06-24 14:02 UTCEPSS rescore
  59. 2026-06-24 14:02 UTCEPSS rescore
  60. 2026-06-23 21:30 UTCEPSS rescore
  61. 2026-06-23 17:20 UTCOSV refresh
  62. 2026-06-22 14:23 UTCEPSS rescore
  63. 2026-06-22 14:23 UTCEPSS rescore
  64. 2026-06-21 01:57 UTCEPSS rescore
  65. 2026-06-21 01:57 UTCEPSS rescore
  66. 2026-06-19 19:23 UTCEPSS rescore
  67. 2026-06-19 19:23 UTCEPSS rescore
  68. 2026-06-18 17:50 UTCEPSS rescore
  69. 2026-06-17 17:50 UTCEPSS rescore
  70. 2026-06-17 17:49 UTCEPSS rescore
  71. 2026-06-16 17:50 UTCEPSS rescore
  72. 2026-06-16 17:50 UTCEPSS rescore
  73. 2026-06-15 17:45 UTCEPSS rescore
  74. 2026-06-14 23:14 UTCEPSS rescore
  75. 2026-06-13 22:57 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-39245
    First seen Jan 15, 2016

    Roundcube Webmail 1.1.3 - Directory Traversal

    Open source ↗

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2015-8770?
CVE-2015-8770 is a high vulnerability published on January 29, 2016. Directory traversal vulnerability in the setskin function in program/include/rcmailoutputhtml.php in Roundcube before 1.0.8 and 1.1.x before 1.1.4 allows remote authenticated users with certain permissions to read arbitrary files or possibly execute arbitrary code via a .. (dot dot) in the skin…
When was CVE-2015-8770 disclosed?
CVE-2015-8770 was first published in the National Vulnerability Database on January 29, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-8770 actively exploited?
CVE-2015-8770 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22% probability of exploitation in the next 30 days, which ranks it in the top 2.4% of all scored CVEs.
What is the CVSS score of CVE-2015-8770?
CVE-2015-8770 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2015-8770?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-8770, 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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