CVE-2026-18772

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (26th percentile of EPSS-scored CVEs). GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Improperly controlled sequential memory allocation vulnerability in Samsung Open Source rlottie allows Exponential Data Expansion.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
26th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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

August 4, 2026

Last Modified

September 23, 2026

Advisory Details (1)

Auto-updated Aug 4, 2026
Patch available. Sources: github_pr.
github_pr

Safety limits to precomp, repeater, and polystar handling

Fix merged in Samsung/rlottie PR #596 on 2026-07-22 — awaiting tagged release

https://github.com/Samsung/rlottie/pull/596

Vendor Advisories for CVE-2026-18772(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
rlottie0.1+dfsg-2 ... 0.1+dfsg-5 (9 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
rlottie—
  • every version up to 0.1+dfsg-4: fixed in 0.1+dfsg-4
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
rlottie—
  • every version up to 0.1+dfsg-4: fixed in 0.1+dfsg-4
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
rlottie—
  • every version up to 0.1+dfsg-4: fixed in 0.1+dfsg-4
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 61× 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 157 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-18772?
CVE-2026-18772 is a medium vulnerability published on August 4, 2026. Improperly controlled sequential memory allocation vulnerability in Samsung Open Source rlottie allows Exponential Data Expansion.
When was CVE-2026-18772 disclosed?
CVE-2026-18772 was first published on August 4, 2026, with the most recent update on September 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18772 actively exploited?
CVE-2026-18772 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18772?
CVE-2026-18772 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18772?
A fix for CVE-2026-18772 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-18772 are linked in the Vendor Advisories panel on this page.

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