CVE-2018-17057

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 26% (97th percentile of EPSS-scored CVEs). 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
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 26%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

An issue was discovered in TCPDF before 6.2.22. Attackers can trigger deserialization of arbitrary data via the phar:// wrapper.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
65
EG Risk 65/100CISA SSVC

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
Severity98% × 45%
Exploitation40% × 40%
Automatability30% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
26%
EPSS %ILE
97th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (EG-KEV: elevated) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 14, 2018

Last Modified

November 21, 2024

Advisory Details (7)

Auto-updated Oct 6, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit.
generic🟡 PoC Available

Full Disclosure: CVE-2018-17057: phar deserialization in TCPDF might lead to RCE

http://seclists.org/fulldisclosure/2019/Mar/36
generic

Packet Storm

http://packetstormsecurity.com/files/152360/LimeSurvey-Deserialization-Remote-Code-Execution.html
generic

Packet Storm

http://packetstormsecurity.com/files/152200/TCPDF-6.2.19-Deserialization-Remote-Code-Execution.html
generic🟡 PoC Available

LimeSurvey < 3.16 - Remote Code Execution - PHP webapps Exploit

https://www.exploit-db.com/exploits/46634/
github_commit Patch Available

commit 1861e33fe05f (tecnickcom/TCPDF)

Patch available: tecnickcom/TCPDF 7.0.8 (contains commit 1861e33fe05f)

https://github.com/tecnickcom/TCPDF/commit/1861e33fe05f653b67d070f7c106463e7a5c26ed
github_commit

commit 1cdd78d27697 (LimeSurvey/LimeSurvey)

Fix landed in LimeSurvey/LimeSurvey commit 1cdd78d27697 — awaiting tagged release

https://github.com/LimeSurvey/LimeSurvey/commit/1cdd78d27697b3150bb44aaa7af1a81062a591a5
generic

Arbitrary code execution in TCPDF

https://contao.org/en/news/security-vulnerability-cve-2018-17057.html

Affected Packages

(8 across 5 ecosystems)
Packagist(4)
PackageVulnerable rangeFix by version rangeDependents
fooman/tcpdf6.0.013 ... 6.2.9 (103 versions)
  • every version up to 6.2.22: fixed in 6.2.22
—
la-haute-societe/tcpdf6.0.013 ... 6.2.9 (104 versions)
  • every version up to 6.2.22: fixed in 6.2.22
—
spoonity/tcpdf6.0.013 ... 6.2.9 (102 versions)
  • every version up to 6.2.22: fixed in 6.2.22
—
tecnickcom/tcpdf6.0.013 ... 6.2.9 (108 versions)
  • every version up to 6.2.22: fixed in 6.2.22
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
tcpdf—
  • every version up to 6.2.26+dfsg-1: fixed in 6.2.26+dfsg-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
tcpdf—
  • every version up to 6.2.26+dfsg-1: fixed in 6.2.26+dfsg-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
tcpdf—
  • every version up to 6.2.26+dfsg-1: fixed in 6.2.26+dfsg-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
tcpdf—
  • every version up to 6.2.26+dfsg-1: fixed in 6.2.26+dfsg-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 22× 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 141 total refreshes for this CVE.

  1. 2026-10-09 20:02 UTCEPSS rescore
  2. 2026-10-08 16:36 UTCEPSS rescore
  3. 2026-10-07 23:41 UTCEPSS rescore
  4. 2026-10-06 15:12 UTCEPSS rescore
  5. 2026-10-05 17:39 UTCEPSS rescore
  6. 2026-10-03 14:21 UTCEPSS rescore
  7. 2026-09-30 14:59 UTCEPSS rescore
  8. 2026-09-30 09:56 UTCEG score recompute
  9. 2026-09-28 19:43 UTCOSV refresh
  10. 2026-09-26 15:53 UTCEPSS rescore
  11. 2026-09-26 00:19 UTCEPSS rescore
  12. 2026-09-24 13:59 UTCEPSS rescore
  13. 2026-09-23 13:42 UTCEPSS rescore
  14. 2026-09-21 20:27 UTCEPSS rescore
  15. 2026-09-19 15:36 UTCEPSS rescore
  16. 2026-09-18 19:22 UTCEPSS rescore
  17. 2026-09-17 19:22 UTCEPSS rescore
  18. 2026-09-16 14:03 UTCEPSS rescore
  19. 2026-09-16 05:06 UTCEPSS rescore
  20. 2026-09-15 03:05 UTCEPSS rescore
  21. 2026-09-12 14:56 UTCEPSS rescore
  22. 2026-09-11 14:47 UTCEPSS rescore
  23. 2026-09-10 09:27 UTCEPSS rescore
  24. 2026-09-09 00:44 UTCOSV refresh
  25. 2026-09-06 13:43 UTCEPSS rescore
Show 75 more
  1. 2026-09-05 15:24 UTCEPSS rescore
  2. 2026-09-04 13:56 UTCEPSS rescore
  3. 2026-09-04 05:02 UTCEPSS rescore
  4. 2026-09-02 14:07 UTCEPSS rescore
  5. 2026-09-02 14:07 UTCEPSS rescore
  6. 2026-09-01 13:49 UTCEPSS rescore
  7. 2026-08-30 19:13 UTCEPSS rescore
  8. 2026-08-28 21:36 UTCEPSS rescore
  9. 2026-08-27 14:21 UTCEPSS rescore
  10. 2026-08-26 14:41 UTCEPSS rescore
  11. 2026-08-25 13:44 UTCEPSS rescore
  12. 2026-08-22 09:37 UTCOSV refresh
  13. 2026-08-21 23:44 UTCEPSS rescore
  14. 2026-08-20 22:51 UTCEPSS rescore
  15. 2026-08-19 17:00 UTCEPSS rescore
  16. 2026-08-18 13:43 UTCEPSS rescore
  17. 2026-08-17 13:42 UTCEPSS rescore
  18. 2026-08-16 14:51 UTCEPSS rescore
  19. 2026-08-16 02:10 UTCEPSS rescore
  20. 2026-08-15 01:26 UTCEPSS rescore
  21. 2026-08-13 21:56 UTCEPSS rescore
  22. 2026-08-12 13:46 UTCEPSS rescore
  23. 2026-08-11 13:36 UTCEPSS rescore
  24. 2026-08-08 16:32 UTCEPSS rescore
  25. 2026-08-07 16:22 UTCEPSS rescore
  26. 2026-08-06 13:42 UTCEPSS rescore
  27. 2026-08-06 13:42 UTCEPSS rescore
  28. 2026-08-06 12:40 UTCOSV refresh
  29. 2026-08-04 15:05 UTCEPSS rescore
  30. 2026-08-02 02:23 UTCEPSS rescore
  31. 2026-08-01 04:12 UTCEPSS rescore
  32. 2026-07-30 16:24 UTCEPSS rescore
  33. 2026-07-28 15:32 UTCEPSS rescore
  34. 2026-07-26 14:51 UTCEPSS rescore
  35. 2026-07-26 14:51 UTCEPSS rescore
  36. 2026-07-24 14:14 UTCEPSS rescore
  37. 2026-07-23 14:15 UTCEPSS rescore
  38. 2026-07-23 14:15 UTCEPSS rescore
  39. 2026-07-23 01:34 UTCEG score recompute
  40. 2026-07-22 22:14 UTCEG score recompute
  41. 2026-07-22 14:04 UTCEPSS rescore
  42. 2026-07-21 15:21 UTCEPSS rescore
  43. 2026-07-21 05:47 UTCOSV refresh
  44. 2026-07-20 17:04 UTCEPSS rescore
  45. 2026-07-20 17:04 UTCEPSS rescore
  46. 2026-07-19 02:26 UTCEPSS rescore
  47. 2026-07-19 02:26 UTCEPSS rescore
  48. 2026-07-16 16:59 UTCEPSS rescore
  49. 2026-07-16 16:59 UTCEPSS rescore
  50. 2026-07-15 16:55 UTCEPSS rescore
  51. 2026-07-15 01:56 UTCEPSS rescore
  52. 2026-07-13 22:26 UTCEPSS rescore
  53. 2026-07-13 06:10 UTCEPSS rescore
  54. 2026-07-12 05:43 UTCEPSS rescore
  55. 2026-07-11 08:24 UTCEPSS rescore
  56. 2026-07-09 19:06 UTCEPSS rescore
  57. 2026-07-08 15:11 UTCEPSS rescore
  58. 2026-07-07 13:42 UTCEPSS rescore
  59. 2026-07-07 13:42 UTCEPSS rescore
  60. 2026-07-06 16:24 UTCEPSS rescore
  61. 2026-07-06 16:24 UTCEPSS rescore
  62. 2026-07-04 06:28 UTCEPSS rescore
  63. 2026-07-04 00:56 UTCOSV refresh
  64. 2026-07-02 16:54 UTCEPSS rescore
  65. 2026-07-01 15:03 UTCEPSS rescore
  66. 2026-07-01 15:03 UTCEPSS rescore
  67. 2026-06-29 14:03 UTCEPSS rescore
  68. 2026-06-28 14:04 UTCEPSS rescore
  69. 2026-06-28 04:53 UTCEPSS rescore
  70. 2026-06-28 04:53 UTCEPSS rescore
  71. 2026-06-27 03:06 UTCEPSS rescore
  72. 2026-06-25 13:47 UTCEPSS rescore
  73. 2026-06-25 13:47 UTCEPSS rescore
  74. 2026-06-24 14:02 UTCEPSS rescore
  75. 2026-06-24 14:02 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-46634
    First seen Apr 2, 2019

    LimeSurvey < 3.16 - Remote Code Execution

    Open source ↗

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2018-17057?
CVE-2018-17057 is a critical vulnerability published on September 14, 2018. An issue was discovered in TCPDF before 6.2.22. Attackers can trigger deserialization of arbitrary data via the phar:// wrapper.
When was CVE-2018-17057 disclosed?
CVE-2018-17057 was first published on September 14, 2018, 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-2018-17057 actively exploited?
CVE-2018-17057 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26% probability of exploitation in the next 30 days (97th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-17057?
CVE-2018-17057 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-17057?
A fix for CVE-2018-17057 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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