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CVE-2019-25427· NVD / CVE Program· CNA VulnCheck

Comodo Dome Firewall 2.7.0 Reflected Cross-Site Scripting via antispyware

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input to the antispyware endpoint. Attackers can send POST requests with JavaScript payloads in the DNSMASQ_WHITELIST or DNSMASQ_BLACKLIST parameters to execute arbitrary code in users' browsers.

MediumCVSS 5.1 · v4.0—No exploit No fix recorded

Noroxi analysis

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Published
Feb 19, 2026
Updated
Jun 16, 2026
EPSS
0.4% · 33th percentile
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Report tools

JSON

Action score

20

Monitor

Low priority for now.

CVSS
20 / 40 · 5.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulnCheck
5.1
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
comododome firewall

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • comodo dome firewallup to 2.7.0 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

  • Comodo Comodo Dome Firewall

    • 2.7.0affected

Same product

comodo: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-25422Comodo Dome Firewall 2.7.0 Cross-Site Scripting via vpnfw
    21Monitor
  • CVE-2019-25419Comodo Dome Firewall 2.7.0 Stored Cross-Site Scripting via schedule
    21Monitor
  • CVE-2019-25405Comodo Dome Firewall 2.7.0 Stored Cross-Site Scripting via license_activation
    21Monitor
  • CVE-2019-25430Comodo Dome Firewall 2.7.0 Reflected Cross-Site Scripting via vpn_users
    20Monitor
  • CVE-2019-25429Comodo Dome Firewall 2.7.0 Reflected Cross-Site Scripting via openvpn_advanced
    20Monitor
  • CVE-2019-25428Comodo Dome Firewall 2.7.0 Cross-Site Scripting via openvpn_users
    20Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2019-254050 days apartComodo Dome Firewall 2.7.0 Stored Cross-Site Scripting via license_activation
    21Monitor
  • CVE-2019-254190 days apartComodo Dome Firewall 2.7.0 Stored Cross-Site Scripting via schedule
    21Monitor
  • CVE-2019-254220 days apartComodo Dome Firewall 2.7.0 Cross-Site Scripting via vpnfw
    21Monitor
  • CVE-2019-254070 days apartComodo Dome Firewall 2.7.0 Cross-Site Scripting via backupschedule
    20Monitor
  • CVE-2019-254080 days apartComodo Dome Firewall 2.7.0 Reflected Cross-Site Scripting via netwizard2
    20Monitor
  • CVE-2019-254100 days apartComodo Dome Firewall 2.7.0 Reflected Cross-Site Scripting via policy_routing
    20Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
A
Scope
X

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records