Evidence used
- No CISA KEV confirmation is currently recorded.
- The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
- EPSS is 0.70% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2026
CVE-2026-64612High confidence
Libcupsfilters: cups-filters: libcupsfilters: cups image filter process abort via malformed png
Red Hat · Red Hat Enterprise Linux 10
Official source article: Red Hat RHSA-2026:56965 ↗. Check the applicable product and release in the original source.
7.5HighCVSS 3.1
Patch only the product branches with a verified fix
Fix availability varies by productHigh technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityHigh→Operational priority:High, unchanged from published severity.unchanged
Compensating controls
- Validate the affected product branch and deploy the verified fixed release.
- Restrict the affected network interface to trusted sources where business-safe.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs Red Hat Red Hat Enterprise Linux 10 and falls inside the recorded affected range.
- Verify the installed build against the product-specific fixed version after deployment.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Remediation availability differs by product scope
Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
- Debian Security Tracker: 7 affected package states with no published fix
Distribution package intelligence
9 package statesRelease-specific package status
Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.
Package result overrides the generic status
BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 7 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.
Repository candidate not checked
A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.
| Distribution release | Source package | Vendor state | Fixed version | Evidence |
|---|---|---|---|---|
| Debian trixietrixie · source | cups-filters | Affected, no fix publishedDebian currently tracks this release as open. | Not published in this feed | Debian Security Tracker ↗Source updated 5 Oct 2026 |
| Debian trixietrixie · source | libcupsfilters | Affected, no fix publishedDebian currently tracks this release as open. | Not published in this feed | Debian Security Tracker ↗Source updated 5 Oct 2026 |
| Debian bookwormbookworm · source | cups-filters | Affected, no fix publishedDebian currently tracks this release as open. | Not published in this feed | Debian Security Tracker ↗Source updated 5 Oct 2026 |
| Debian forkyforky · source | cups-filters | Affected, no fix publishedDebian currently tracks this release as open. | Not published in this feed | Debian Security Tracker ↗Source updated 5 Oct 2026 |
| Debian forkyforky · source | libcupsfilters | Affected, no fix publishedDebian currently tracks this release as open. | Not published in this feed | Debian Security Tracker ↗Source updated 5 Oct 2026 |
| Debian sidsid · source | cups-filters | Affected, no fix publishedDebian currently tracks this release as open. | Not published in this feed | Debian Security Tracker ↗Source updated 5 Oct 2026 |
| Debian sidsid · source | libcupsfilters | Affected, no fix publishedDebian currently tracks this release as open. | Not published in this feed | Debian Security Tracker ↗Source updated 5 Oct 2026 |
| Ubuntu 24.04 LTSnoble · standard archive | cups-filters | Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing. | Not published in this feed | Canonical Ubuntu Security ↗Source updated 5 Oct 2026 |
| Ubuntu 24.04 LTSnoble · standard archive | libcupsfilters | Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing. | Not published in this feed | Canonical Ubuntu Security ↗Source updated 5 Oct 2026 |
Direct vendor intelligence
1 currentAuthoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
CVE-2026-64612 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitylibcupsfilters: cups-filters: libcupsfilters: CUPS image filter process abort via malformed PNG
The vendor explicitly identifies these products as affected by this CVE.
- cups-filters as a component of Red Hat Enterprise Linux 7
- cups-filters-devel as a component of Red Hat Enterprise Linux 7
- cups-filters-libs as a component of Red Hat Enterprise Linux 7
- cups-filters.src as a component of Red Hat Enterprise Linux 7
- Summary
- A flaw was found in libcupsfilters and cups-filters. The PNG image reading function creates a libpng reader without installing an error recovery handler, causing the CUPS image filter process to abort when processing a malformed PNG file. An unauthenticated attacker could exploit this by submitting a specially crafted PNG print job, leading to denial of service of the in-flight print job.
- Remediation
- For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
High technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.
Fix availability varies by product01
What, why and how
A flaw was found in libcupsfilters and cups-filters. The PNG image reading function creates a libpng reader without installing an error recovery handler, causing the CUPS image filter process to abort when processing a malformed PNG file. An unauthenticated attacker could exploit this by submitting a specially crafted PNG print job, leading to denial of service of the in-flight print job.
What
A flaw was found in libcupsfilters and cups-filters. The PNG image reading function creates a libpng reader without installing an error recovery handler, causing the CUPS image filter process to abort when processing a malformed PNG file. An unauthenticated attacker could exploit this by submitting a specially crafted PNG print job, leading to denial of service of the in-flight print job.
Why
An exception is thrown from a function, but it is not caught.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.
What
A flaw was found in libcupsfilters and cups-filters. The PNG image reading function creates a libpng reader without installing an error recovery handler, causing the CUPS image filter process to abort when processing a malformed PNG file. An unauthenticated attacker could exploit this by submitting a specially crafted PNG print job, leading to denial of service of the in-flight print job.
Why
An exception is thrown from a function, but it is not caught.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material None recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
- Likely attack path
- a network path → Uncaught Exception → disrupt the affected service
- Attack surface
- Network
- Privileges required
- None: unauthenticated exploitation is possible
- User interaction
- None
- Attack complexity
- Low: no specialised conditions are recorded
- Security boundary
- Unchanged: impact remains within the vulnerable component's security authority
- Weakness
?
CWE means Common Weakness Enumeration: a standard category for the underlying weakness. - CWE-248 ↗
CWE-248: Uncaught Exception. An exception is thrown from a function, but it is not caught.
- CVSS vector
?
CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCommon Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.- Post-exploitation / living off the land
- No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
03
Patch and workaround
Operational remediation based on structured source evidence.
- Status
?
Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change. - Fix availability varies by product
- Affected
- Fixed
- libcupsfilters-1:2.0.0-13.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
- libcupsfilters-1:2.0.0-13.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
- libcupsfilters-1:2.0.0-13.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
- libcupsfilters-1:2.0.0-13.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10)
- libcupsfilters-1:2.0.0-13.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
- cups-filters-libs-0:1.20.0-36.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
- cups-filters-libs-0:1.20.0-36.el8_10.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8)
- cups-filters-libs-0:1.20.0-36.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
- cups-filters-libs-0:1.20.0-36.el8_10.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
- cups-filters-libs-0:1.20.0-36.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
- cups-filters-libs-0:1.28.7-27.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
- cups-filters-libs-0:1.28.7-27.el9_8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
- cups-filters-libs-0:1.28.7-27.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
- cups-filters-libs-0:1.28.7-27.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
- cups-filters-libs-0:1.28.7-27.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
- Action
- Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
- Workaround
- No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 20 Jul 2026 · Last source change 24 Aug 2026, 09:42 UTC · CWE-248 · Uncaught Exception
CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source FIRST · tracked since 2026-08-14
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2026-46046
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD awaiting enrichment
Core structured fields are present and their contributing authorities are shown above.
Material change intelligence
View recent updates ↗What changed after publication
- Affected versionsThe structured affected or fixed version information changed.CNA ↗
- Before
- See the vendor and CVE records for the affected range. · Fixed: 1:2.0.0-13.el10_2 < *; 0:1.20.0-36.el8_10.1 < *
- After
- See the vendor and CVE records for the affected range. · Fixed: 1:2.0.0-13.el10_2 < *; 0:1.20.0-36.el8_10.1 < *; 0:1.28.7-27.el9_8 < *
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- cups-filters as a component of Red Hat Enterprise Linux 7; cups-filters-devel as a component of Red Hat Enterprise Linux 7; cups-filters-libs as a component of Red Hat Enterprise Linux 7; cups-filters.src as a component of Red Hat Enterprise Linux 7; cups-filters as a component of Red Hat Enterprise Linux 9; cups-filters-devel as a component of Red Hat Enterprise Linux 9; cups-filters-libs as a component of Red Hat Enterprise Linux 9; cups-filters.src as a component of Red Hat Enterprise Linux 9 · Fixed: libcupsfilters-1:2.0.0-13.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); cups-filters-libs-0:1.20.0-36.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
- After
- cups-filters as a component of Red Hat Enterprise Linux 7; cups-filters-devel as a component of Red Hat Enterprise Linux 7; cups-filters-libs as a component of Red Hat Enterprise Linux 7; cups-filters.src as a component of Red Hat Enterprise Linux 7 · Fixed: libcupsfilters-1:2.0.0-13.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); cups-filters-libs-0:1.20.0-36.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.28.7-27.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); cups-filters-libs-0:1.28.7-27.el9_8.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9); cups-filters-libs-0:1.28.7-27.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); cups-filters-libs-0:1.28.7-27.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); cups-filters-libs-0:1.28.7-27.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
- Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:56965; removed remediation: access.redhat.com/RHSA-2026:57451; removed vendor advisory: access.redhat.com/RHSA-2026:57451.CNA ↗
- Before
- remediation: access.redhat.com/RHSA-2026:57451 · vendor advisory: access.redhat.com/RHSA-2026:57451
- After
- remediation: access.redhat.com/RHSA-2026:56965
- Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:57451; added vendor advisory: access.redhat.com/RHSA-2026:57451; removed remediation: access.redhat.com/RHSA-2026:56965.access.redhat.com ↗
- Before
- remediation: access.redhat.com/RHSA-2026:56965
- After
- remediation: access.redhat.com/RHSA-2026:57451 · vendor advisory: access.redhat.com/RHSA-2026:57451
- Affected versionsThe structured affected or fixed version information changed.CNA ↗
- Before
- See the vendor and CVE records for the affected range. · Fixed: 1:2.0.0-13.el10_2 < *
- After
- See the vendor and CVE records for the affected range. · Fixed: 1:2.0.0-13.el10_2 < *; 0:1.20.0-36.el8_10.1 < *
- Affected versionsThe structured affected or fixed version information changed.Red Hat Product Security ↗
- Before
- cups-filters as a component of Red Hat Enterprise Linux 7; cups-filters-devel as a component of Red Hat Enterprise Linux 7; cups-filters-libs as a component of Red Hat Enterprise Linux 7; cups-filters.src as a component of Red Hat Enterprise Linux 7; cups-filters as a component of Red Hat Enterprise Linux 8; cups-filters-devel as a component of Red Hat Enterprise Linux 8; cups-filters-libs as a component of Red Hat Enterprise Linux 8; cups-filters.src as a component of Red Hat Enterprise Linux 8; cups-filters as a component of Red Hat Enterprise Linux 9; cups-filters-devel as a component of Red Hat Enterprise Linux 9; cups-filters-libs as a component of Red Hat Enterprise Linux 9; cups-filters.src as a component of Red Hat Enterprise Linux 9 · Fixed: libcupsfilters-1:2.0.0-13.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
- After
- cups-filters as a component of Red Hat Enterprise Linux 7; cups-filters-devel as a component of Red Hat Enterprise Linux 7; cups-filters-libs as a component of Red Hat Enterprise Linux 7; cups-filters.src as a component of Red Hat Enterprise Linux 7; cups-filters as a component of Red Hat Enterprise Linux 9; cups-filters-devel as a component of Red Hat Enterprise Linux 9; cups-filters-libs as a component of Red Hat Enterprise Linux 9; cups-filters.src as a component of Red Hat Enterprise Linux 9 · Fixed: libcupsfilters-1:2.0.0-13.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); libcupsfilters-1:2.0.0-13.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); cups-filters-libs-0:1.20.0-36.el8_10.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8); cups-filters-libs-0:1.20.0-36.el8_10.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
- Vendor guidanceAuthoritative vendor guidance changed: removed vendor advisory: access.redhat.com/RHSA-2026:56965.CNA ↗
- Before
- remediation: access.redhat.com/RHSA-2026:56965 · vendor advisory: access.redhat.com/RHSA-2026:56965
- After
- remediation: access.redhat.com/RHSA-2026:56965
- Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:56965; added vendor advisory: access.redhat.com/RHSA-2026:56965.access.redhat.com ↗
- Before
- no authoritative guidance recorded
- After
- remediation: access.redhat.com/RHSA-2026:56965 · vendor advisory: access.redhat.com/RHSA-2026:56965
- Affected versionsThe structured affected or fixed version information changed.CNA ↗
- Before
- See the vendor and CVE records for the affected range. · Fixed: No fixed version is explicitly recorded in the structured CVE data.
- After
- See the vendor and CVE records for the affected range. · Fixed: 1:2.0.0-13.el10_2 < *
- Remediation statusRemediation status changed from Awaiting fix to Patch available.access.redhat.com ↗
- Before
- Awaiting fix
- After
- Patch available
CVE published
Fixed release or patch reference recorded
Technical terms and abbreviations used in this report
- CVE
- Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
- CVSS
- Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
- EPSS
- Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
- CWE
- Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
- CNA
- CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
- CISA ADP
- Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
- NVD
- National Vulnerability Database: NIST's enrichment service for CVE records.
- CERT / CSIRT
- A computer security incident response team that publishes warnings or coordinates incident response.
- PoC
- Proof of concept: public material that demonstrates or helps reproduce exploitation.
- CSAF
- Common Security Advisory Framework: a machine-readable format for security advisories.
- LoTL
- Living off the land: abuse of legitimate tools or system functions during an attack.