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CVE
CVE-2026-40079
Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Command
Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Command Injection due to lack of sanitization in the escape_command() function. The escape_command() function at lib/rrd.php is a no-op: it returns $command unchanged.
The command line built by rrdtool_function_graph() is passed through this function and then to shell_exec($full_commandline). The risk is in __rrd_execute() where text_format values from graph templates (which may contain host variable substitutions) reach shell_exec without adequate escaping. This issue has been addressed in version 1.2.31.
CRITICAL · CVSS 9.8
EPSS 0.01113
EPSS exploitation odds1.11% · top 38%
Schedule remediation
- SSVC automatable: yes - attacks can be scripted at scale
- CVSS base score ≥ 7.0
No Sigma yet — build one →
YARA rules0
Look this up elsewhere - one-click external pivots
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How to read a CVE - triage first, then detect and patch
This page is every public fact about CVE-2026-40079, cross-linked. Its job is to answer one question fast - does this need my attention now? - and then hand you the two things you do about it. Here is how an analyst reads it.
Triage: should I act now? Four signals, and they are not interchangeable:
CVSSseverity - how bad it is IF exploited, 0-10. A high CVSS alone is not urgency; a flaw can be a perfect 10 and never actually be attacked.
EPSSprobability - a model’s estimate of the chance it is exploited in the next 30 days, 0-1. This is the “will it actually happen” signal.
CISA KEVconfirmed - it is being exploited in the wild right now. The strongest signal on the page; KEV beats any score.
Weaponisedavailability - public exploits / PoCs, and especially Metasploit modules rated Excellent / Great. Reliable, packaged exploit code means low-skill attackers can use it today.
How they combine: KEV, or a dependable Metasploit module, means patch now regardless of CVSS. High CVSS + low EPSS + no exploit is real but not an emergency - schedule it. Low CVSS but KEV-listed still gets patched now. The verdict above already weighed these for you; this is how it got there.
Then what - two workflows:
Detectwhen you cannot patch today, follow this CVE to the ATT&CK techniques it enables, then Build a SIEM detection (the green button) - author a rule, test it in Atomic, deploy it. That buys visibility while the patch waits.
PatchAffected products / packages tell you if you are exposed; Fixed versions by distribution and Vendor advisories give the exact version that closes it.
Reading order for the panels below: verdict + badges, then Public exploits / Metasploit (is it weaponised), then ATT&CK techniques + Sigma / IDS rules (can I detect it), then Affected products / packages + Fixed versions (am I exposed, what patches it), then Threat actors / IOCs (who uses it), then Scoring & timeline / references (the evidence).
EPSS exploitation probability
1.11%
Top 38%odds of exploitation in the next 30 days
CVSS metric silhouette
shape grows toward worst-case
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Tech impact
total
CVSS vector breakdown
Exploitability - how they get in
Attack Vector
Network
Adjacent
Local
Physical
Attack Complexity
Low
High
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Impact - what breaks
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLifecycle
- 25 Jun 2026Published to NVD
- 26 Jun 2026Last modified
Every entry is a recorded date - NVD publish/modify, CISA KEV add, public exploit disclosure. No inferred events.
Attack path
Full kill chain
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ATT&CK techniques
1Techniques this CVE enables. Pills with a solid outline are high confidence - named directly in ATT&CK or Nuclei, or human-curated by CTID; the rest are inferred from the weakness type using MITRE's CVE Mapping Methodology and the CWE → CAPEC chain. Broad, generic-weakness guesses are filtered out. A small N× marks a technique that N independent sources agree on.
▤ Build a SIEM detection for these techniques▤
CAPEC attack patterns
9Attack patterns this CVE enables - the bridge from weakness to ATT&CK technique.
CAPEC-CAPEC-108 · Command Line Execution through SQL Injection CAPEC-CAPEC-137 · Parameter Injection CAPEC-CAPEC-15 · Command Delimiters CAPEC-CAPEC-174 · Flash Parameter Injection CAPEC-CAPEC-41 · Using Meta-characters in E-mail Headers to Inject Malicious Payloads CAPEC-CAPEC-43 · Exploiting Multiple Input Interpretation Layers CAPEC-CAPEC-460 · HTTP Parameter Pollution (HPP) CAPEC-CAPEC-6 · Argument Injection CAPEC-CAPEC-88 · OS Command Injection
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Weakness Classification
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Related CVEs
8CVEs linked to this one by a shared weakness (CWE) or affected product - joins on data already in the engine, with the reason shown per row.
CVE-1999-0067
phf CGI program allows remote command execution through shell metacharacters.
same CWE-78
CVE-1999-0043
Command execution via shell metachars in INN daemon (innd) 1.5 using "newgroup" ...
same CWE-78
CRITICAL
CVE-2001-1583
lpd daemon (in.lpd) in Solaris 8 and earlier allows remote attackers to execute ...
4
same CWE-78
CVE-2002-0061
Apache for Win32 before 1.3.24, and 2.0.x before 2.0.34-beta, allows remote atta...
1
same CWE-78
CVE-1999-0113
Some implementations of rlogin allow root access if given a -froot parameter.
1
same CWE-88
CVE-2001-0150
Internet Explorer 5.5 and earlier executes Telnet sessions using command line ar...
1
same CWE-88
CVE-2001-1246
PHP 4.0.5 through 4.1.0 in safe mode does not properly cleanse the 5th parameter...
1
same CWE-88
CVE-2001-0667
Internet Explorer 6 and earlier, when used with the Telnet client in Services fo...
same CWE-88
HIGH
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Fixed versions by distribution
1The package version that resolves this CVE on each Linux distribution, from the vendor’s published security data. fixed in shows a patched version exists; open means the package is listed as affected with no fix yet.
alpine edgecacti fixed in 1.2.31-0
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References & Sources
2Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.