CVE-2025-34120

HIGHNVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under NVD CVSS v3. EPSS exploit probability: 69.9%, top 1% 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
Weaponized
8.7
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.7Exploit: NoneExposed: 0

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

An unauthenticated file download vulnerability exists in LimeSurvey versions from 2.0+ up to and including 2.06+ Build 151014. The application fails to validate serialized input to the admin backup endpoint (index.php/admin/update/sa/backup), allowing attackers to specify arbitrary file paths using a crafted datasupdateinfo payload. The files are packaged in a ZIP archive and made available for download without authentication. This vulnerability can be exploited to read arbitrary files on the host system, including sensitive OS and configuration files.

CVSS v3
8.7
EG Score
8.7(medium)
EPSS
65.2%
KEV
Not listed

Published

July 16, 2025

Last Modified

April 15, 2026

References (5)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 46× 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. 2026-07-21 15:24 UTCEPSS rescore
  2. 2026-07-20 17:07 UTCEPSS rescore
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  1. 2026-07-04 06:30 UTCEPSS rescore
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  26. 2026-06-19 19:25 UTCEPSS rescore
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  39. 2026-06-10 22:18 UTCEPSS rescore
  40. 2026-06-08 15:57 UTCEG score recompute▲ 8.70
  41. 2026-06-08 15:57 UTCGHSA enrichment
  42. 2026-06-08 14:16 UTCEPSS rescore
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  44. 2026-06-07 15:24 UTCEPSS rescore
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  46. 2026-06-05 22:46 UTCEPSS rescore
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  50. 2026-06-02 20:12 UTCEPSS rescore
  51. 2026-06-01 13:51 UTCEPSS rescore
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  66. 2026-05-21 22:42 UTCEPSS rescore
  67. 2026-05-21 11:07 UTCEG score recompute
  68. 2026-05-21 11:07 UTCGHSA enrichment
  69. 2026-05-20 22:37 UTCEPSS rescore
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  75. 2026-05-18 21:31 UTCEPSS rescore

Publicly available exploits

(1 reference)

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

  • Metasploitauxiliary/admin/http/limesurvey_file_download✓ verified
    First seen Oct 12, 2015

    Limesurvey Unauthenticated File Download

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-34120?
CVE-2025-34120 is a high vulnerability published on July 16, 2025. An unauthenticated file download vulnerability exists in LimeSurvey versions from 2.0+ up to and including 2.06+ Build 151014. The application fails to validate serialized input to the admin backup endpoint (index.php/admin/update/sa/backup), allowing attackers to specify arbitrary file paths using…
When was CVE-2025-34120 disclosed?
CVE-2025-34120 was first published in the National Vulnerability Database on July 16, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-34120 actively exploited?
CVE-2025-34120 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-34120?
CVE-2025-34120 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2025-34120?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-34120, 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.

Dependency Blast Radius

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