CVE Intelligence
Critical Memory corruption exploit reference

CVE-2025-57807 — ImageMagick BlobStream Forward-Seek Under-Allocation

ImageMagick is free and open-source software used for editing and manipulating digital images. ImageMagick versions lower than 14.8.2 include insecure functions: SeekBlob(), which permits advancing the stream offset beyond the current end without increasing capacity, and WriteBlob(), which then expands by quantum + length (amortized) instead of offset + length, and copies to data + offset. When offset ≫ extent, the copy targets memory beyond the allocation, producing a deterministic heap write on 64-bit builds. No 2⁶⁴ arithmetic wrap, external delegates, or policy settings are required. This is fixed in version 14.8.2.

Published Sep 5, 2025 · Updated Oct 19, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: GitHub_M

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 0.3% (30-day exploitation probability)+3
  • Technical severity (critical)+10
  • CISA SSVC: exploitation "poc"+5

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
0.29%
ahead of 20% of scored CVEs · Oct 19, 2026
Affects
Imagemagick
Imagemagick and 12 more
CVSS base
9.8
Critical · 4 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
Proof of concept
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

  • Documented patch — github.com (NIST National Vulnerability Database)
  • Documented mitigation — github.com (NIST National Vulnerability Database)
  • Nuget Magick.net-q16-x64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)
  • Nuget Magick.net-q8-openmp-x64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)
  • Nuget Magick.net-q8-x64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)
  • NuGet Magick.NET-Q16-HDRI-x64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)
  • NuGet Magick.NET-Q16-HDRI-OpenMP-x64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)
  • NuGet Magick.NET-Q16-OpenMP-x64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)
  • NuGet Magick.NET-Q8-arm64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)
  • NuGet Magick.NET-Q16-arm64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)
  • NuGet Magick.NET-Q16-OpenMP-arm64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)
  • NuGet Magick.NET-Q8-OpenMP-arm64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)
  • NuGet Magick.NET-Q16-HDRI-OpenMP-arm64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)
  • NuGet Magick.NET-Q16-HDRI-arm64: fixed in version 14.8.2 — github.com (GitHub Security Advisories)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Imagemagick Imagemagick, NuGet Magick.NET-Q16-arm64, NuGet Magick.NET-Q16-HDRI-arm64…).
  2. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
  3. Apply the fixed version or the patch documented under Remediation.
  4. Search available logs for exploit probes matching the vulnerability class (memory corruption), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Imagemagick Imagemagick < 6.9.13-29≥ 7.0.0-0 and < 7.1.2-3 Vulnerable NIST National Vulnerability Database
Imagemagick Imagemagick version < 14.8.2 Vulnerable CVE Program (cve.org) e CISA ADP
NuGet Magick.NET-Q16-arm64 < 14.8.2 Vulnerable GitHub Security Advisories
NuGet Magick.NET-Q16-HDRI-arm64 < 14.8.2 Vulnerable GitHub Security Advisories
NuGet Magick.NET-Q16-HDRI-OpenMP-arm64 < 14.8.2 Vulnerable GitHub Security Advisories
NuGet Magick.NET-Q16-HDRI-OpenMP-x64 < 14.8.2 Vulnerable GitHub Security Advisories
NuGet Magick.NET-Q16-HDRI-x64 < 14.8.2 Vulnerable GitHub Security Advisories
NuGet Magick.NET-Q16-OpenMP-arm64 < 14.8.2 Vulnerable GitHub Security Advisories
NuGet Magick.NET-Q16-OpenMP-x64 < 14.8.2 Vulnerable GitHub Security Advisories
Nuget Magick.net-q16-x64 < 14.8.2 Vulnerable GitHub Security Advisories
NuGet Magick.NET-Q8-arm64 < 14.8.2 Vulnerable GitHub Security Advisories
NuGet Magick.NET-Q8-OpenMP-arm64 < 14.8.2 Vulnerable GitHub Security Advisories
Nuget Magick.net-q8-openmp-x64 < 14.8.2 Vulnerable GitHub Security Advisories
Nuget Magick.net-q8-x64 < 14.8.2 Vulnerable GitHub Security Advisories

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
9.8 CVSS 3.1 Critical 3.9 5.9 nvd@nist.gov via NIST National Vulnerability Database
3.8 CVSS 3.1 Low 0.3 3.4 security-advisories@github.com via NIST National Vulnerability Database
3.8 CVSS 3.1 Low — — GitHub, Inc. via GitHub Security Advisories
3.8 CVSS 3.1 Low — — GitHub_M via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)
Scoring entities (NIST, CNA, ADP) score independently; each score is shown with its origin. For prioritization we use 9.8 (NVD (NIST)) as a conservative provisional reference — not a definitive official score.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-122 · Heap-based Buffer Overflow

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
  • Correlate service crashes/restarts with inbound traffic; repeated crashes may indicate attempts.
web/proxy/WAF logsnetwork IDS/IPSendpoint telemetry (EDR)crash dumps

Timeline

What happened to this CVE, newest first.

  • 2026
  • Fix documented
    Oct 19, 2026 · GitHub Security Advisories
  • Affected products added · nuget/magick.net-q16-x64, nuget/magick.net-q8-x64, nuget/magick.net-q16-hdri-x64, nuget/magick.net-q8-openmp-x64, nuget/
    Oct 19, 2026 · GitHub Security Advisories
  • Affected products added · imagemagick/imagemagick
    Oct 19, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 19, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 19, 2026
  • Fix documented
    Oct 19, 2026 · NIST National Vulnerability Database
  • Affected products added · imagemagick/imagemagick
    Oct 19, 2026 · NIST National Vulnerability Database
  • CVSS changed · 9.8
    Oct 19, 2026 · NIST National Vulnerability Database
  • Source status changed · → Modified
    Oct 19, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 19, 2026 · Alertas do Telegram
  • 2025
  • CVE published
    Sep 5, 2025 · GitHub_M

Source activity

Repeated readings are counted rather than listed.

  • 2× References added · Oct 19, 2026 – Oct 19, 2026
  • 1× Official description updated · Oct 19, 2026 – Oct 19, 2026

References

5 on the record

Elsewhere on this site

Imagemagick
every CVE for this vendor
Memory corruption
same class
CWE-122
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-109964 ImageMagick before 7.1.2-33 and 6.9.13-58 Heap Buffer Underwrite in PICT Decoder 6d
  • CVE-2026-109282 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 Undefined Behavior in INFO, JSON and YAML Encoders 7d
  • CVE-2026-109276 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 Temporary File Leak in JNG Decoder 7d
  • CVE-2026-109279 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 Heap Buffer Overflow via Concurrent Security Policy Access 7d
  • CVE-2026-109277 ImageMagick before 7.1.2-32 Policy Bypass via -script Operation 7d
  • CVE-2026-109281 ImageMagick 7.1.0-21 before 7.1.2-32 Heap Buffer Over-Read via -fx Option 7d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-57807 is "ImageMagick BlobStream Forward-Seek Under-Allocation", rated Critical. It affects Imagemagick (Imagemagick); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 9.8 describes technical severity. EPSS 0.29% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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