CVE-2026-49509

Memory disclosure and crash via fractional JPEG ratios

Published Sep 3, 2026 · Updated Sep 6, 2026

An out-of-bounds read in Samsung rLottie's JPEG decoder allows attackers to read adjacent memory via a crafted JPEG image. The bundled stb_image frame-header parser accepts component sampling factors that produce fractional resampling ratios, causing the resampler to read beyond its intended buffer. Exploitation requires a user or application to process the crafted image; the bounded consequences are memory disclosure and a possible crash.

CVSS severity4.4
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in Samsung rLottie's JPEG decoder allows attackers to read adjacent memory via a crafted JPEG image. The bundled stb_image frame-header parser accepts component sampling factors that produce fractional resampling ratios, causing the resampler to read beyond its intended buffer. Exploitation requires a user or application to process the crafted image; the bounded consequences are memory disclosure and a possible crash.

The record

CVE
CVE-2026-49509
Published
Sep 3, 2026
Updated
Sep 6, 2026
Vendor
Samsung Electronics
Product
rlottie
Classifications
CWE-125, CAPEC-540, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=25648aef19187b3f87f4d9420b8d761453ad4630

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics · rlottieversion=25648aef19187b3f87f4d9420b8d761453ad4630

Published CVSS scores

4.4Samsung PSIRTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CAPEC-540Overread Buffers
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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