CVE-2026-40333

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 87% 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
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

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

libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, two functions in camlibs/ptp2/ptp-pack.c accept a data pointer but no length parameter, performing unbounded reads. Their callers in ptp_unpack_EOS_events() have xsize available but never pass it, leaving both functions unable to validate reads against the actual buffer boundary. Commit 1817ecead20c2aafa7549dac9619fe38f47b2f53 patches the issue.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

April 18, 2026

Last Modified

April 20, 2026

Advisory Details (2)

Auto-updated Aug 2, 2026
Patch available. Sources: github_commit, github.
github Patch Available

OOB read in ptp_unpack_EOS_ImageFormat() and ptp_unpack_EOS_CustomFuncEx() due to missing length parameter in ptp-pack.c · Advisory · gphoto/libgphoto2 · GitHub

https://github.com/gphoto/libgphoto2/security/advisories/GHSA-hq94-cp6h-3gjp
github_commit Patch Available

commit 1817ecead20c (gphoto/libgphoto2)

Patch available: gphoto/libgphoto2 v2.5.34 (contains commit 1817ecead20c)

https://github.com/gphoto/libgphoto2/commit/1817ecead20c2aafa7549dac9619fe38f47b2f53

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libgphoto22.5.27-1 ... 2.5.33-1 (11 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libgphoto22.5.30-1 ... 2.5.33-1 (9 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libgphoto22.5.31-4, 2.5.32-1, 2.5.33-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libgphoto22.5.31-4, 2.5.32-1, 2.5.33-1——

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 25× 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 154 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-40333?
CVE-2026-40333 is a medium vulnerability published on April 18, 2026. libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, two functions in camlibs/ptp2/ptp-pack.c accept a data pointer but no length parameter, performing unbounded reads. Their callers in ptpunpackEOS_events() have xsize available but never pass it, leaving both…
When was CVE-2026-40333 disclosed?
CVE-2026-40333 was first published in the National Vulnerability Database on April 18, 2026, with the most recent update on April 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40333 actively exploited?
CVE-2026-40333 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 87.7% of all scored CVEs.
What is the CVSS score of CVE-2026-40333?
CVE-2026-40333 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-40333?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40333, 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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