ImageMagick - Memory Leak in PNG Encoder via MNG Image Writing
Priority LOW 28CWE-401Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-401.
Summary
ImageMagick before 7.1.2-19 contains a memory leak vulnerability in the PNG encoder when writing MNG images. Attackers can trigger the encoder failure condition to exhaust memory resources and cause denial of service.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00284 21st percentileScored 2026-11-07
Fix Partial ImageMagick (ImageMagick): 7.1.2-19, 6.9.13-44Red Hat: 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ImageMagick | ImageMagick | 7.0.0 to before 7.1.2-19 | 7.1.2-19 | Patch available | CNA |
| ImageMagick | ImageMagick | before 6.9.13-44 | 6.9.13-44 | Patch available | CNA |
- ImageMagick VendorImageMagick Affected 7.0.0 to before 7.1.2-19 Fixed in 7.1.2-19 Patch available CNA
- ImageMagick VendorImageMagick Affected before 6.9.13-44 Fixed in 6.9.13-44 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:* | before 6.9.13-44; 7.0.0-0 to before 7.1.2-19 | Vulnerable | ImageMagick |
- cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:* Versions before 6.9.13-44; 7.0.0-0 to before 7.1.2-19 Vulnerable ·ImageMagick
Remediation
- Fix · CNA ImageMagick (ImageMagick) Fixed in 7.1.2-19
- Fix · CNA ImageMagick (ImageMagick) Fixed in 6.9.13-44
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
ImageMagick 6.9.13-44, 7.1.2-19
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-40724 ImageMagick - Heap Buffer Overflow via Off-by-One in Morphology ProcessingPriority LOW 21
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-56365
- 2026-10-03 Alias added: GHSA-hq73-7c65-p9cq
- 2026-10-29 Affected versions changed · CNA
References
More Imagemagick vulnerabilities
- TI-2016-03144 The (1) EPHEMERAL, (2) HTTPS, (3) MVG, (4) MSL, (5) TEXT, (6) SHOW, (7) WIN, and (8) PLT… KEVCVSS 3.1HIGH 8.4
- TI-2023-16996 Improper input validation in ImageMagick CVSS 3.1CRITICAL 9.8
- TI-2016-03148 The (1) HTTP and (2) FTP coders in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1… KEVCVSS 3.1MEDIUM 5.5
- TI-2016-03145 The EPHEMERAL coder in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allows remote… KEVCVSS 3.1MEDIUM 5.5
- TI-2025-35690 ImageMagick BlobStream Forward-Seek Under-Allocation CVSS 3.1CRITICAL 9.8
- TI-2025-33094 ImageMagick has Stack Buffer Overflow in image.c CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-56365 · CVE Program
- CVE-2026-56365 · NVD
- FIRST EPSS
- GHSA-hq73-7c65-p9cq · GitHub Advisory Database · CC BY 4.0
- CVE-2026-56365 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences