Security readout for executives and security teams
Plain-English summary
A critical Adobe Campaign Classic template-engine flaw may let a remote, unauthenticated attacker run code without user interaction. Successful exploitation could compromise confidentiality, integrity, and availability beyond the vulnerable component’s security boundary. The supplied evidence does not confirm active exploitation or provide a fixed version.
Executive priority
Treat this as an immediate remediation priority, especially for externally reachable systems. The maximum CVSS score and unauthenticated, interaction-free code-execution path create potentially severe business impact. Active exploitation is not established, but absence of evidence should not delay exposure assessment and vendor-directed remediation.
Technical view
CVE-2026-48323 is CWE-1336 template-engine neutralization failure in Adobe Campaign Classic. It carries CVSS 3.1 score 10.0: network-accessible, low complexity, no privileges or user interaction, changed scope, and high confidentiality, integrity, and availability impact. The bundle identifies ACC v7 7.4.3 build 9399 as affected.
Likely exposure
Highest risk applies to reachable Adobe Campaign Classic deployments running ACC v7 7.4.3 build 9399. The supplied version data is ambiguous and does not establish whether other releases are affected. Organizations must inventory installations, verify exact builds, and assess network reachability.
Exploitation context
The sources describe remote, unauthenticated, low-complexity exploitation without user interaction. However, the CVE is not listed as KEV in the supplied bundle, and no cited evidence confirms exploitation in the wild. No exploit maturity or attack prevalence information is provided.
Researcher notes
The description indicates template-engine injection with changed scope, but provides no vulnerable component, entry point, preconditions beyond CVSS, exploit chain, indicators, or patch details. Version notation includes an unexplained “0” and ACC v7 7.4.3 build 9399. Avoid assuming broader version coverage until Adobe clarifies it.
Mitigation direction
- Review Adobe advisory APSB26-120 for the vendor-approved remediation and affected-version guidance.
- Prioritize remediation for internet-accessible or untrusted-network-accessible Campaign Classic systems.
- Until remediated, restrict Campaign Classic access to required trusted networks and administrators.
- Monitor Adobe guidance for clarification regarding affected versions and fixed builds.
Validation and detection
- Inventory all Adobe Campaign Classic instances and record their exact versions and build numbers.
- Identify instances running ACC v7 7.4.3 build 9399.
- Confirm whether each instance is reachable from the internet or untrusted networks.
- Compare deployed builds with Adobe advisory APSB26-120 and documented remediation guidance.
- After remediation, verify the installed build and repeat exposure checks.
- Review relevant application and system logs for unexplained code execution or configuration 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.