Security readout for executives and security teams
Plain-English summary
Adobe Campaign Classic has a critical template-processing flaw that may let an unauthenticated remote attacker run code without user interaction. Successful exploitation could compromise data, alter systems, disrupt service, and cross security boundaries. The supplied evidence does not establish active exploitation.
Executive priority
Treat this as an immediate remediation priority where the identified build is deployed, especially on externally reachable or business-critical systems. Assign ownership now, confirm exposure, consult Adobe’s advisory, and reduce access pending remediation. Do not claim an active incident solely from this CVE.
Technical view
CVE-2026-48323 is CWE-1336: improper neutralization of special elements in a template engine. Its CVSS 3.1 score is 10.0 (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H), indicating network access, low complexity, no privileges, no interaction, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
The bundle identifies Adobe Campaign Classic v7 7.4.3 build 9399; its additional version value “0” is ambiguous. Exposure depends on deployed versions and attacker reachability to vulnerable functionality. The provided sources do not define affected configurations, internet-facing requirements, or the complete version range.
Exploitation context
The described attack is remote, unauthenticated, low complexity, and requires no user interaction. However, the CVE is not listed as KEV in the supplied bundle, and no provided source confirms exploitation in the wild, public exploit availability, or observed attacks.
Researcher notes
The changed-scope rating suggests successful template injection may affect resources beyond the vulnerable component’s original security authority. The bundle provides no vulnerable endpoint, template context, indicators, patch version, or reliable full version range. Testing should remain authorized and non-destructive, using Adobe’s advisory as the authoritative scope reference.
Mitigation direction
- Inventory Adobe Campaign Classic versions and identify deployments running v7 7.4.3 build 9399.
- Review Adobe advisory APSB26-120 for supported updates or vendor-prescribed mitigations.
- Prioritize restricting untrusted network access to affected Campaign Classic services until remediation is confirmed.
- Apply Adobe-supported remediation after testing, following established change and rollback procedures.
Validation and detection
- Verify installed Campaign Classic versions and build numbers against Adobe advisory APSB26-120.
- Confirm affected services are not unnecessarily reachable from untrusted networks.
- After remediation, verify the installed build is outside Adobe’s affected range.
- Review relevant application and system telemetry for unexplained code execution or unauthorized changes.
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-1336: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-48323 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
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/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:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.96adobeVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/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/campaign/apsb26-120.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.
Improper Neutralization of Special Elements Used in a Template Engine
Improper Neutralization of Special Elements Used in a Template Engine represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.