Security readout for executives and security teams
Plain-English summary
A flaw in Control Web Panel could let an attacker run commands through its user panel. This could expose or alter data and disrupt services accessible to that panel. The supplied description identifies webpanel_version releases before 1.16 as affected. Its critical rating warrants urgent exposure checks, particularly for internet-accessible installations.
Executive priority
Urgent triage is appropriate because the supplied rating describes unauthenticated remote command execution with potentially severe confidentiality, integrity, and availability impacts. Prioritize exposed installations, assign an owner, and confirm remediation guidance promptly. Actual business impact depends on panel permissions and accessible resources; active exploitation is not established by this bundle.
Technical view
CVE-2026-77876 is an OS command injection vulnerability (CWE-78) in the protected_directory user panel module. The supplied description states that unescaped file POST input in the acc=deletedp action reaches shell_exec, allowing arbitrary command execution in the user panel context. The supplied CVSS 3.1 score is 9.8, indicating network access, low complexity, no privileges, and no user interaction.
Likely exposure
Potential exposure concerns CWP installations with webpanel_version below 1.16 and a reachable affected user panel module. Internet accessibility increases urgency. The structured affected-product entry lists version "0" with defaultStatus "unaffected", which conflicts with the descriptive version range. Confirm the installed component version and vendor guidance before deciding applicability.
Exploitation context
The bundle marks KEV as false and provides no evidence of active exploitation. An exploit-tagged technical reference is listed, but its contents are not supplied. The CVSS vector indicates unauthenticated exploitation; the description establishes execution in the user panel context but does not establish root privileges or provide the complete authentication-path details.
Researcher notes
This assessment uses only the supplied bundle; linked pages were not retrieved. The descriptive affected range and structured version metadata conflict. Version 1.16 is the stated boundary, but the bundle does not reproduce vendor fix details. Confirm authentication prerequisites, component version mapping, and execution privileges through the cited advisories before treating those details as independently verified.
Mitigation direction
- Check the vendor changelog and advisory for the confirmed fixed release and supported upgrade procedure.
- Prioritize upgrading affected installations once vendor guidance confirms the appropriate target version.
- Where operationally feasible, restrict user panel access to trusted networks as an interim exposure reduction.
Validation and detection
- Inventory CWP installations and record their webpanel_version values.
- Confirm whether the affected user panel module is reachable from untrusted networks.
- Resolve the conflicting affected-version metadata against vendor guidance before closing findings.
- After remediation, verify the installed version and confirm normal panel operation.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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-2026-77876 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
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.
CVSS vector scores
2 official scoresWe 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:U/C:H/I:H/A:H3.95.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.
Source materials
- CVE List V5 sourceCVE List V5
- ChangelogCVE reference, VulnCheck · release-notes, patch
- VulnCheck BlogCVE reference, VulnCheck · technical-description, exploit
- VulnCheck Advisory: Control Web Panel (CWP) < 1.16 OS Command Injection via protected_directoryCVE reference, VulnCheck · third-party-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 an OS Command
Improper Neutralization of Special Elements used in an OS Command represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.