CVE-2026-30971

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.1% (64th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated

Also known asEUVD-2026-103154 (ENISA EUVD)Source: ENISA EUVD

8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 1.1%CVSS: 8.8Exploit: No code on recordExposed services: Not assessed

The CVE record names the fixed release — apply it.

ZoneMinder is a free, open source closed-circuit television software application. Prior to 1.39.2, 1.38.2, and 1.36.40, ZoneMinder interpolates an unvalidated monitor Device field into shell commands in PHP and Perl control paths when an authenticated user with monitor-create or monitor-edit permission saves a Local monitor whose Device Path contains shell metacharacters and the monitor control or startup path runs. In this attack mechanism, the stored Device value reaches Perl qx() and backtick execution before zmdc.pl argument detainting, while separate PHP command paths use bypassable escapeshellcmd defenses. The attacker can execute arbitrary commands as the web server user. This vulnerability is fixed in 1.39.2, 1.38.2, and 1.36.40.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.1%
EPSS %ILE
64th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
1.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-30). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 16, 2026

Last Modified

October 16, 2026

Advisory Details (2)

Auto-updated Oct 16, 2026
🔬 Proof of concept available. Fix named in the CVE record. Sources: github, github_commit.
GitHub commit

commit 419846c8750c (ZoneMinder/zoneminder)

Fix landed in ZoneMinder/zoneminder commit 419846c8750c — awaiting tagged release

https://github.com/ZoneMinder/zoneminder/commit/419846c8750c3f45b9b8a1df8cd49c189a14dc03
GitHub advisoryMentions a patch (unverified)🟡 PoC Available

Authenticated RCE via command injection in monitor Device Path · Advisory · ZoneMinder/zoneminder · GitHub

https://github.com/ZoneMinder/zoneminder/security/advisories/GHSA-g66m-77fq-79v9

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 24× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-02 16:44 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  2. 2026-10-31 16:32 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  3. 2026-10-30 23:55 UTCEG score recompute
  4. 2026-10-30 16:34 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  5. 2026-10-29 16:33 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  6. 2026-10-28 16:32 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  7. 2026-10-27 16:31 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  8. 2026-10-26 16:31 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  9. 2026-10-25 16:32 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  10. 2026-10-25 14:36 UTCEG score recompute
  11. 2026-10-24 16:32 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  12. 2026-10-23 22:14 UTCEG score recompute
  13. 2026-10-23 16:31 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  14. 2026-10-22 16:34 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  15. 2026-10-21 16:32 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  17. 2026-10-19 16:31 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  18. 2026-10-18 16:31 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  19. 2026-10-18 03:49 UTCEG score recompute
  20. 2026-10-17 16:33 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  21. 2026-10-16 20:26 UTCEG score recompute
  22. 2026-10-16 20:11 UTCEG score recompute
  23. 2026-10-16 19:48 UTCEG score recomputeFirst assessed: 8.8 HIGH
  24. 2026-10-16 19:47 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-30971?
CVE-2026-30971 is a high-severity vulnerability; its CVE record was published on October 16, 2026. ZoneMinder is a free, open source closed-circuit television software application. Prior to 1.39.2, 1.38.2, and 1.36.40, ZoneMinder interpolates an unvalidated monitor Device field into shell commands in PHP and Perl control paths when an authenticated user with monitor-create or monitor-edit…
When was the CVE record for CVE-2026-30971 published?
The CVE record for CVE-2026-30971 was published on October 16, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 16, 2026; the record at its source may have been updated since.
Is CVE-2026-30971 actively exploited?
CVE-2026-30971 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.1% probability of exploitation in the next 30 days (64th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-30971?
CVE-2026-30971 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-30971?
The CVE record for CVE-2026-30971 names the fix: "This vulnerability is fixed in 1.39.2, 1.38.2, and 1.36.40."

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