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CVE-2015-6531

21
FAUCET Score

CVE-2015-6531 describes a critical vulnerability in Palo Alto Networks Panorama VM Appliance running PAN-OS versions prior to 6.0.1, allowing remote attackers to execute arbitrary Python code. This high-severity flaw (CVSS 7.8) requires user interaction (UI:R) but has low attack complexity (AC:L), potentially leading to complete compromise of confidentiality, integrity, and availability (C:H/I:H/A:H) if a crafted firmware image is processed. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.0CPE matchmatch criteria
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.87%
Probability of exploitation in next 30 days
EPSS Percentile
85.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0287 is in the 86th percentile among its peer group of 11,621 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

envoyvendor investigatingvia llm_extracted
mozillavendor investigatingvia llm_extracted
pythonvendor investigatingvia llm_extracted

Vendor Advisories (3)

mozillallm-mozilla-29bd7b6f539ce542HIGH

[R2] Palo Alto Networks Panorama VM Appliance PAN-OS Firmware Signature Verification Bypass Arbitrary Code Execution

Sep 15, 2015
envoyllm-envoy-099c85ac1b56f015HIGH

[R2] Palo Alto Networks Panorama VM Appliance PAN-OS Firmware Signature Verification Bypass Arbitrary Code Execution

Sep 15, 2015
pythonllm-python-25d7bd796c953078HIGH

[R2] Palo Alto Networks Panorama VM Appliance PAN-OS Firmware Signature Verification Bypass Arbitrary Code Execution

Sep 15, 2015

References

tenable.com / security/research/tra-2015-02
ExploitThird Party Advisory
securityfocus.com / bid/76862
Third Party AdvisoryVDB Entry