CVE-2024-1874

CRITICALNVD 9.49.4
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.4 under NVD CVSS v3. EPSS exploit probability: 33% (98th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated

Also known asEUVD-2024-17599 (ENISA EUVD)Source: ENISA EUVD

9.4EG
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).
  • Public exploit or proof-of-concept code is available
CISA-KEV: Not listedEPSS PROB: 33%CVSS: 9.4Exploit: Public PoCExposed services: Not assessed

A fix is available — apply it.

In PHP versions 8.1.* before 8.1.28, 8.2.* before 8.2.18, 8.3.* before 8.3.5, when using proc_open() command with array syntax, due to insufficient escaping, if the arguments of the executed command are controlled by a malicious user, the user can supply arguments that would execute arbitrary commands in Windows shell.

CVSS v3
9.4
EG Score
9.4CRITICALmedium confidence
EG Risk
73
EG Risk 73/100

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)
Severity94% × 45%
Impact severity (EG Severity): CVSS 9.4 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.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (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 yes (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: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
33%
EPSS %ILE
98th
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 (9.4): severity, escalated by confirmed exploitation. This CVE's 9.4 is its impact severity (EG Severity), not escalated.

EG Severity
9.4 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
33% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-11). 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: 3 days if the affected system is publicly exposed; 60 days 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.

A fix is available. 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 yes (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)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

April 29, 2024

Last Modified

November 4, 2025

Advisory Details (7)

Auto-updated Oct 2, 2026
Patch available. Sources: github.
Web page

[SECURITY] Fedora 40 Update: php-8.3.6-1.fc40 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/KJZK3X6B7FBE32FETDSMRLJXTFTHKWSY/
GitHub advisoryMentions a patch (unverified)

Command injection via array-ish $command parameter of proc_open even if bypass_shell option enabled on Windows · Advisory · php/php-src · GitHub

https://github.com/php/php-src/security/advisories/GHSA-pc52-254m-w9w7
Web page

oss-security - PHP security releases 8.3.8, 8.2.20, and 8.1.29

http://www.openwall.com/lists/oss-security/2024/06/07/1
Web page

oss-security - PHP security releases 8.1.28, 8.2.18, & 8.3.6

http://www.openwall.com/lists/oss-security/2024/04/12/11
Web page

[SECURITY] Fedora 39 Update: php-8.2.20-1.fc39 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/W45DBOH56NQDRTOM2DN2LNA2FZIMC3PK/
Web page

[SECURITY] Fedora 40 Update: php-8.3.8-1.fc40 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/[email protected]/message/PKGTQUOA2NTZ3RXN22CSAUJPIRUYRB4B/

Vendor Advisories for CVE-2024-1874(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(11 across 6 ecosystems)
Alpine:v3.19(3)
PackageVulnerable rangeFix by version rangeDependents
php81—
  • every version up to 8.1.28-r0: fixed in 8.1.28-r0
—
php82—
  • every version up to 8.2.18-r0: fixed in 8.2.18-r0
—
php83—
  • every version up to 8.3.6-r0: fixed in 8.3.6-r0
—
Alpine:v3.20(2)
PackageVulnerable rangeFix by version rangeDependents
php82—
  • every version up to 8.2.18-r0: fixed in 8.2.18-r0
—
php83—
  • every version up to 8.3.5-r0: fixed in 8.3.5-r0
—
Alpine:v3.21(2)
PackageVulnerable rangeFix by version rangeDependents
php82—
  • every version up to 8.2.18-r0: fixed in 8.2.18-r0
—
php83—
  • every version up to 8.3.5-r0: fixed in 8.3.5-r0
—
Alpine:v3.22(2)
PackageVulnerable rangeFix by version rangeDependents
php82—
  • every version up to 8.2.18-r0: fixed in 8.2.18-r0
—
php83—
  • every version up to 8.3.5-r0: fixed in 8.3.5-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
php83—
  • every version up to 8.3.5-r0: fixed in 8.3.5-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
php83—
  • every version up to 8.3.5-r0: fixed in 8.3.5-r0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 45× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 227 rows on record for this CVE, as 96 entries (4 repeats merged).

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 4 repeat rows among the latest 100 are merged into the row they repeat. The 127 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:30 UTCEPSS rescoreEPSS 33% · 98th percentile
  2. 2026-11-12 13:56 UTCEchelonGraph re-scored
  3. 2026-11-11 16:34 UTCEPSS rescoreEPSS 33% · 98th percentile
  4. 2026-11-11 11:45 UTCEchelonGraph re-scored
  5. 2026-11-11 11:45 UTCVendor advisory
  6. 2026-11-10 16:38 UTCEPSS rescoreEPSS 33% · 98th percentile
  7. 2026-11-10 09:31 UTCEchelonGraph re-scored
  8. 2026-11-09 07:19 UTCEchelonGraph re-scored
  9. 2026-11-09 07:19 UTCVendor advisory
  10. 2026-11-08 05:08 UTCEchelonGraph re-scored
  11. 2026-11-08 05:08 UTCVendor advisory
  12. 2026-11-07 16:35 UTCEPSS rescoreEPSS 33% · 98th percentile
  13. 2026-11-07 02:56 UTCEchelonGraph re-scored
  14. 2026-11-07 02:56 UTCVendor advisory
  15. 2026-11-06 16:31 UTCEPSS rescoreEPSS 33% · 98th percentile
  16. 2026-11-06 00:44 UTCEchelonGraph re-scored
  17. 2026-11-06 00:44 UTCVendor advisory
  18. 2026-11-05 16:33 UTCEPSS rescoreEPSS 33% · 98th percentile
  19. 2026-11-04 22:32 UTCEchelonGraph re-scored
  20. 2026-11-04 22:32 UTCVendor advisory
  21. 2026-11-04 21:25 UTCOSV refresh
  22. 2026-11-04 16:32 UTCEPSS rescoreEPSS 33% · 98th percentile
  23. 2026-11-03 20:12 UTCEchelonGraph re-scored
  24. 2026-11-03 20:12 UTCVendor advisory
  25. 2026-11-03 16:41 UTCEPSS rescoreEPSS 33% · 98th percentile
Show 71 more
  1. 2026-11-02 17:59 UTCEchelonGraph re-scored
  2. 2026-11-02 17:59 UTCVendor advisory
  3. 2026-11-02 16:40 UTCEPSS rescoreEPSS 33% · 98th percentile
  4. 2026-11-01 16:31 UTCEPSS rescoreEPSS 33% · 98th percentile
  5. 2026-11-01 15:47 UTCEchelonGraph re-scored
  6. 2026-11-01 15:47 UTCVendor advisory
  7. 2026-10-31 16:30 UTCEPSS rescoreEPSS 33% · 98th percentile
  8. 2026-10-31 13:35 UTCEchelonGraph re-scored
  9. 2026-10-31 13:35 UTCVendor advisory
  10. 2026-10-30 16:31 UTCEPSS rescoreEPSS 33% · 98th percentile
  11. 2026-10-30 11:24 UTCEchelonGraph re-scored
  12. 2026-10-30 11:24 UTCVendor advisory
  13. 2026-10-29 16:30 UTCEPSS rescoreEPSS 33% · 98th percentile
  14. 2026-10-29 09:11 UTCEchelonGraph re-scored
  15. 2026-10-28 16:29 UTCEPSS rescoreEPSS 33% · 98th percentile
  16. 2026-10-28 07:00 UTCEchelonGraph re-scored
  17. 2026-10-27 16:29 UTCEPSS rescoreEPSS 33% · 98th percentile
  18. 2026-10-27 04:48 UTCEchelonGraph re-scored
  19. 2026-10-26 16:29 UTCEPSS rescoreEPSS 33% · 98th percentile
  20. 2026-10-25 22:16 UTCVendor advisory
  21. 2026-10-25 17:20 UTCEchelonGraph re-scored
  22. 2026-10-25 16:30 UTCEPSS rescoreEPSS 33% · 98th percentile
  23. 2026-10-24 19:57 UTCEchelonGraph re-scored
  24. 2026-10-24 19:57 UTCVendor advisory
  25. 2026-10-24 16:30 UTCEPSS rescoreEPSS 33% · 98th percentile
  26. 2026-10-23 17:45 UTCEchelonGraph re-scored
  27. 2026-10-23 16:29 UTCEPSS rescoreEPSS 33% · 98th percentile
  28. 2026-10-22 16:31 UTCEPSS rescoreEPSS 33% · 98th percentile
  29. 2026-10-22 15:32 UTCEchelonGraph re-scored
  30. 2026-10-21 16:29 UTCEPSS rescoreEPSS 33% · 98th percentile
  31. 2026-10-21 13:13 UTCEchelonGraph re-scored
  32. 2026-10-21 13:13 UTCVendor advisory
  33. 2026-10-20 16:30 UTCEPSS rescoreEPSS 33% · 98th percentile
  34. 2026-10-20 10:39 UTCEchelonGraph re-scored
  35. 2026-10-20 10:39 UTCVendor advisory
  36. 2026-10-19 16:29 UTCEPSS rescoreEPSS 33% · 98th percentile
  37. 2026-10-19 08:25 UTCEchelonGraph re-scored
  38. 2026-10-19 08:25 UTCVendor advisory
  39. 2026-10-18 06:14 UTCEchelonGraph re-scored
  40. 2026-10-18 06:14 UTCVendor advisory
  41. 2026-10-17 16:30 UTCEPSS rescoreEPSS 33% · 98th percentile
  42. 2026-10-17 04:01 UTCEchelonGraph re-scored
  43. 2026-10-16 16:36 UTCEPSS rescoreEPSS 33% · 98th percentile
  44. 2026-10-16 01:48 UTCEchelonGraph re-scored
  45. 2026-10-15 16:29 UTCEPSS rescoreEPSS 33% · 98th percentile
  46. 2026-10-14 21:18 UTCEchelonGraph re-scored
  47. 2026-10-14 16:30 UTCEPSS rescoreEPSS 33% · 98th percentile
  48. 2026-10-13 17:15 UTCEchelonGraph re-scored
  49. 2026-10-13 17:15 UTCVendor advisory
  50. 2026-10-13 16:30 UTCEPSS rescoreEPSS 33% · 98th percentile
  51. 2026-10-12 15:02 UTCEchelonGraph re-scored
  52. 2026-10-12 15:02 UTCVendor advisory
  53. 2026-10-11 21:29 UTCEchelonGraph re-scored
  54. 2026-10-11 16:22 UTCEchelonGraph re-scored
  55. 2026-10-11 13:45 UTCEPSS rescoreEPSS 33% · 98th percentile
  56. 2026-10-11 08:55 UTCOSV refresh
  57. 2026-10-10 19:58 UTCEPSS rescoreEPSS 33% · 98th percentile
  58. 2026-10-09 20:05 UTCEPSS rescoreEPSS 33% · 98th percentile
  59. 2026-10-08 17:07 UTCEPSS rescoreEPSS 33% · 98th percentile
  60. 2026-10-07 23:46 UTCEPSS rescoreEPSS 33% · 98th percentile
  61. 2026-10-06 15:15 UTCEPSS rescoreEPSS 33% · 98th percentile
  62. 2026-10-03 14:23 UTCEPSS rescoreEPSS 33% · 98th percentile
  63. 2026-10-01 19:48 UTCEPSS rescoreEPSS 33% · 98th percentile
  64. 2026-09-30 16:48 UTCEchelonGraph re-scored
  65. 2026-09-30 15:01 UTCEPSS rescoreEPSS 33% · 98th percentile
  66. 2026-09-27 13:43 UTCEPSS rescoreEPSS 33% · 98th percentile
  67. 2026-09-26 00:23 UTCEPSS rescoreEPSS 33% · 98th percentile
  68. 2026-09-24 14:01 UTCEPSS rescoreEPSS 33% · 98th percentile
  69. 2026-09-23 13:46 UTCEPSS rescoreEPSS 33% · 98th percentile
  70. 2026-09-22 14:46 UTCEPSS rescoreEPSS 33% · 98th percentile
  71. 2026-09-21 21:45 UTCOSV refresh

Publicly available exploits

(2 references)

Public exploit code is referenced for this CVE (2 GitHub PoCs). Defenders should treat patch urgency accordingly.

  • GitHub PoCMrBongoC/CVE-2024-1874
    Published Jul 18, 2024

    Proof Of Concept for CVE-2024-1874

    Open source ↗
  • GitHub PoCTgcohce/CVE-2024-1874
    Published Jul 18, 2024

    Proof Of Concept for CVE-2024-1874

    Open source ↗

Frequently asked(5)

What is CVE-2024-1874?
CVE-2024-1874 is a critical-severity vulnerability; its CVE record was published on April 29, 2024. In PHP versions 8.1.* before 8.1.28, 8.2.* before 8.2.18, 8.3.* before 8.3.5, when using proc_open() command with array syntax, due to insufficient escaping, if the arguments of the executed command are controlled by a malicious user, the user can supply arguments that would execute arbitrary…
When was CVE-2024-1874 made public?
CVE-2024-1874 was made public on April 11, 2024: that is the date its CVE record's CNA, PHP Group, gives for when the vulnerability was made public. The CVE record itself was published on April 29, 2024. EchelonGraph's copy of the record carries a last-modified date of November 4, 2025; the record at its source may have been updated since.
Is CVE-2024-1874 actively exploited?
CVE-2024-1874 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33% probability of exploitation in the next 30 days (98th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-1874?
CVE-2024-1874 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2024-1874?
A fix for CVE-2024-1874 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2024-1874 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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