Security readout for executives and security teams
Plain-English summary
A flaw in Adobe’s Content Credentials SDKs can crash an application and interrupt service. It affects older JavaScript and Rust releases. The issue does not expose or alter data according to the supplied CVSS assessment, but exploitation requires no user interaction once an attacker has the necessary local access.
Executive priority
Schedule remediation through the normal vulnerability process, prioritizing business-critical services using affected SDKs. Escalate urgency where crashes could disrupt customer-facing or production workflows. The moderate rating reflects high potential availability impact balanced against the local-access requirement and absence of cited active exploitation.
Technical view
An integer underflow (CWE-191) affects c2pa-web 0.7.0 and earlier and c2pa 0.78.2 and earlier. The resulting wraparound can cause an application crash and denial of service. CVSS 3.1 scores it 6.2 with local access, low complexity, no privileges, no interaction, and high availability impact.
Likely exposure
Exposure is limited to applications that include affected Content Credentials JavaScript or Rust SDK versions. Internet reachability alone does not establish exploitability because the CVSS vector specifies local access. The supplied evidence does not identify particular applications, platforms, or deployment patterns that expose the vulnerable processing path.
Exploitation context
The source bundle says exploitation requires no user interaction, but the CVSS vector requires local access. It provides no evidence of public exploitation, and the CVE is not listed as KEV. No confidentiality or integrity impact is identified.
Researcher notes
The supplied sources identify the weakness class and availability outcome but do not describe the triggering input or vulnerable code path. Treat 0.7.1 and 0.80.1 as remediation targets supported by the supplied version data. The status of unlisted intermediate Rust releases is not established by this bundle.
Mitigation direction
- Upgrade c2pa-web to 0.7.1 or a later vendor-supported release.
- Upgrade the Rust c2pa package to 0.80.1 or a later vendor-supported release.
- Review Adobe’s advisory for deployment-specific instructions and any subsequent updates.
- Apply service isolation and restart controls where immediate upgrading is unavailable.
Validation and detection
- Inventory applications and lockfiles for c2pa-web 0.7.0 or earlier.
- Inventory Rust dependencies for c2pa 0.78.2 or earlier.
- Confirm deployed artifacts resolve to c2pa-web 0.7.1 or later.
- Confirm deployed artifacts resolve to Rust c2pa 0.80.1 or later.
- Review crash and availability telemetry for unexplained failures in Content Credentials processing.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-191: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-34667 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H2.53.6adobeVulnerability scoring details
Base CVSS 3.1 score
6.2MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/content-authenticity-sdk/apsb26-53.htmlCVE reference, adobe · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Integer Underflow (Wrap or Wraparound)
Integer Underflow (Wrap or Wraparound) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.