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
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.2%CVSS: 8.8Exploit: None knownExposed services: Not assessed

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
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

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%
EPSS PROB
1.2%
EPSS %ILE
66th
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
redhatMentions a patch (unverified)

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 / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
gst-plugins-bad1.01.18.4-3 ... 1.29.2-2 (110 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-bad1.01.22.0-4 ... 1.29.2-2 (97 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-bad1.01.26.2-3, 1.26.2-3+deb13u1, 1.26.2-3+deb13u2
  • every version up to 1.26.2-3+deb13u3: fixed in 1.26.2-3+deb13u3
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
gst-plugins-bad1.01.26.10-1 ... 1.28.4-1 (30 versions)
  • every version up to 1.28.5-1: fixed in 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 7× in last 7d / 26× 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 370 total refreshes for this CVE.

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

Related CVEs(same product + 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 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 1.2% probability of exploitation in the next 30 days (66th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-52720?
CVE-2026-52720 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-52720?
A fix for CVE-2026-52720 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-52720 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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