CVE-2026-3282Public exploit

Local memory disclosure via unchecked alpha-band index

Published Feb 27, 2026 · Updated Feb 27, 2026

Out-of-bounds read in libvips 8.19.0 allows local users to disclose process memory via a crafted unpremultiply alpha-band index. vips_unpremultiply_build accepts an explicit alpha_band without checking it against the input band count, after which the generator directly indexes pixel buffers. A low-privileged local user who can invoke the operation can read adjacent heap data; the published reproducer also demonstrates an out-of-bounds write.

CVSS severity3.3
Low
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in libvips 8.19.0 allows local users to disclose process memory via a crafted unpremultiply alpha-band index. vips_unpremultiply_build accepts an explicit alpha_band without checking it against the input band count, after which the generator directly indexes pixel buffers. A low-privileged local user who can invoke the operation can read adjacent heap data; the published reproducer also demonstrates an out-of-bounds write.

The record

CVE
CVE-2026-3282
Published
Feb 27, 2026
Updated
Feb 27, 2026
Vendor
libvips
Product
libvips
Classifications
CWE-125, CWE-119
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 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=8.19.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

libvips · libvipsversion=8.19.0

Published CVSS scores

3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
1.7VulDBAV:L/AC:L/Au:S/C:P/I:N/A:N
1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

Public exploit references

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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