CVE-2026-52720

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-15. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

A heap buffer overflow vulnerability was found in GStreamer's librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

June 15, 2026

Last Modified

August 3, 2026

Advisory Details (3)

Auto-updated Jun 15, 2026
Patch available. Sources: redhat.
generic

GStreamer / gstreamer · GitLab

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5105
redhat

2486731 – (CVE-2026-52720) CVE-2026-52720 gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb

https://bugzilla.redhat.com/show_bug.cgi?id=2486731
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-52720

Vendor Advisories for CVE-2026-52720(11)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(12)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatgstreamer-plugins-bad-free-0:0.10.23-25.el7_92026-08-03redhat
redhatgstreamer1-plugins-bad-free-0:1.16.1-4.el8_8.22026-07-30redhat
redhatgstreamer1-plugins-bad-free-0:1.24.11-3.el10_0.42026-07-29redhat
redhatgstreamer1-plugins-bad-free-0:1.22.1-6.el9_4.42026-07-28redhat
redhatgstreamer1-plugins-bad-free-0:1.22.12-5.el9_6.42026-07-28redhat
redhatgstreamer1-plugins-bad-free-0:1.10.4-6.el7_92026-07-28redhat
redhatgstreamer1-plugins-bad-free-0:1.16.1-4.el8_4.22026-07-28redhat
redhatgstreamer1-plugins-bad-free-0:1.18.4-9.el9_2.32026-07-28redhat
redhatgstreamer1-plugins-bad-free-0:1.16.1-4.el8_6.22026-07-28redhat
redhatgstreamer1-plugins-bad-free-0:1.16.1-8.el8_102026-07-09redhat
redhatgstreamer1-plugins-bad-free-0:1.26.7-2.el10_2.42026-07-08redhat
redhatgstreamer1-plugins-bad-free-0:1.22.12-7.el9_8.12026-07-08redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.18.4-3 ... 1.29.2-2 (110 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.22.0-4 ... 1.29.2-2 (94 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.26.10-1 ... 1.29.2-2 (37 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
gst-plugins-bad1.01.26.10-1 ... 1.28.4-1 (30 versions)1.28.5-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 23× in last 7d / 182× 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 329 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-52720?
CVE-2026-52720 is a high vulnerability published on June 15, 2026. A heap buffer overflow vulnerability was found in GStreamer's librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a…
When was CVE-2026-52720 disclosed?
CVE-2026-52720 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52720 actively exploited?
CVE-2026-52720 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.0% of all scored CVEs.
What is the CVSS score of CVE-2026-52720?
CVE-2026-52720 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-52720?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52720, 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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