CVE-2007-1383

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-01. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this weekWeaponized

Also known asEUVD-2007-1379 (ENISA EUVD) · GHSA-259c-37px-2x76 (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan mitigationNo fix on record since 2007: if the vendor still supports the product, apply the fixed version it names within your standard update timelines at low or medium mission impact and sooner than that at high; if it no longer does, isolate the affected system on your normal schedule at low or medium mission impact and sooner than that at high, or retire the product (the SSVC decision on this page).
  • Public exploit code is available (Exploit-DB, marked verified by Exploit-DB)
CISA-KEV: Not listedEPSS PROB: 15%CVSS: 9.8Exploit: Exploit-DB (verified)Exposed services: Not assessed

No fix has been recorded since the CVE record was published in 2007 — if the vendor still supports the product, apply the fixed version it names; if not, isolate the affected system (restrict network access to it, for example with a firewall, or keep it off the internet) or retire the product.

Integer overflow in the 16 bit variable reference counter in PHP 4 allows context-dependent attackers to execute arbitrary code by overflowing this counter, which causes the same variable to be destroyed twice, a related issue to CVE-2007-1286.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
85
EG Risk 85/100

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)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation65% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 2 (Weaponized): 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 or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (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: No fix has been recorded since the CVE record was published in 2007. If the vendor still supports the product, apply the fixed version it names within your standard update timelines at low or medium mission impact and sooner than that at high; if it no longer does, isolate the affected system (restrict network access to it, for example with a firewall, or keep it off the internet) on your normal schedule at low or medium mission impact and sooner than that at high, or retire the product.
EPSS PROB
15%
EPSS %ILE
96th
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 (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
15% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). 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 or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.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 or medium mission impact; Attend at high (mission-essential systems).

No fix has been recorded since the CVE record was published in 2007. If the vendor still supports the product, apply the fixed version it names within your standard update timelines at low or medium mission impact and sooner than that at high; if it no longer does, isolate the affected system (restrict network access to it, for example with a firewall, or keep it off the internet) on your normal schedule at low or medium mission impact and sooner than that at high, or retire the product.

Exploitation none (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.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

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

March 10, 2007

Last Modified

April 23, 2026

Advisory Details (4)

Auto-updated Oct 8, 2026
No fix on record since 2007.
Web page

PHP: Multiple vulnerabilities (GLSA 200703-21) — Gentoo security

http://security.gentoo.org/glsa/glsa-200703-21.xml
Web page

Secunia Research & Vulnerability Insights | Flexera

http://secunia.com/advisories/25056
Web page

Secunia Research & Vulnerability Insights | Flexera

http://secunia.com/advisories/24606
Web page

CVE-2007-1286 - PSIRT.COM

http://www.securityfocus.com/bid/22765

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 68× 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.

Showing the most recent 99 of 181 refreshes on record for this CVE.

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. 1 repeat row among the latest 100 is merged into the row it repeats. The 82 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 21:06 UTCEG score recompute
  2. 2026-11-01 21:06 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  3. 2026-11-01 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  4. 2026-10-31 20:22 UTCEG score recompute
  5. 2026-10-31 20:22 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  6. 2026-10-31 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  7. 2026-10-30 19:40 UTCEG score recompute
  8. 2026-10-30 19:40 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  9. 2026-10-30 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  10. 2026-10-29 18:50 UTCEG score recompute
  11. 2026-10-29 18:50 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  12. 2026-10-29 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  13. 2026-10-28 18:07 UTCEG score recompute
  14. 2026-10-28 18:07 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  15. 2026-10-28 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  16. 2026-10-27 17:18 UTCEG score recompute
  17. 2026-10-27 17:18 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  18. 2026-10-27 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  19. 2026-10-26 16:36 UTCEG score recompute
  20. 2026-10-26 16:35 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  21. 2026-10-26 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  22. 2026-10-25 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  23. 2026-10-25 15:39 UTCEG score recompute
  24. 2026-10-25 15:38 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  25. 2026-10-24 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
Show 74 more
  1. 2026-10-24 14:49 UTCEG score recompute
  2. 2026-10-24 14:49 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  3. 2026-10-23 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  4. 2026-10-23 14:07 UTCEG score recompute
  5. 2026-10-23 14:07 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  6. 2026-10-22 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  7. 2026-10-22 13:23 UTCEG score recompute
  8. 2026-10-22 13:23 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  9. 2026-10-21 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  10. 2026-10-21 12:38 UTCEG score recompute
  11. 2026-10-21 12:38 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  12. 2026-10-20 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  13. 2026-10-20 11:55 UTCEG score recompute
  14. 2026-10-20 11:55 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  15. 2026-10-19 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  16. 2026-10-19 11:11 UTCEG score recompute
  17. 2026-10-19 11:11 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  18. 2026-10-18 08:20 UTCEG score recompute
  19. 2026-10-18 08:20 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  20. 2026-10-17 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  21. 2026-10-17 07:36 UTCEG score recompute
  22. 2026-10-17 07:36 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  23. 2026-10-16 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  24. 2026-10-16 06:51 UTCEG score recompute
  25. 2026-10-16 06:51 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  26. 2026-10-15 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  27. 2026-10-15 05:34 UTCEG score recompute
  28. 2026-10-15 05:34 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  29. 2026-10-14 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  30. 2026-10-14 01:12 UTCEG score recompute
  31. 2026-10-14 01:12 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  32. 2026-10-13 16:25 UTCEPSS rescoreEPSS 15% · 96th percentile
  33. 2026-10-12 21:21 UTCEG score recompute
  34. 2026-10-12 21:21 UTCGHSA enrichmentGHSA-259c-37px-2x76 · GitHub severity HIGH · GitHub CVSS 9.8
  35. 2026-10-12 16:26 UTCEPSS rescoreEPSS 15% · 96th percentile
  36. 2026-10-12 02:08 UTCEG score recompute
  37. 2026-10-11 13:37 UTCEPSS rescoreEPSS 15% · 96th percentile
  38. 2026-10-10 19:53 UTCEPSS rescoreEPSS 15% · 96th percentile
  39. 2026-10-09 19:59 UTCEPSS rescoreEPSS 15% · 96th percentile
  40. 2026-10-08 16:32 UTCEPSS rescoreEPSS 15% · 96th percentile
  41. 2026-10-07 23:36 UTCEPSS rescoreEPSS 15% · 96th percentile
  42. 2026-10-06 15:08 UTCEPSS rescoreEPSS 15% · 96th percentile
  43. 2026-10-05 17:37 UTCEPSS rescoreEPSS 15% · 96th percentile
  44. 2026-09-30 14:57 UTCEPSS rescoreEPSS 15% · 96th percentile
  45. 2026-09-29 07:39 UTCEG score recompute
  46. 2026-09-18 19:20 UTCEPSS rescoreEPSS 15% · 96th percentile
  47. 2026-09-15 03:04 UTCEPSS rescoreEPSS 15% · 96th percentile
  48. 2026-09-13 16:40 UTCEPSS rescoreEPSS 15% · 96th percentile
  49. 2026-09-12 14:54 UTCEPSS rescoreEPSS 15% · 96th percentile
  50. 2026-09-10 09:24 UTCEPSS rescoreEPSS 15% · 96th percentile
  51. 2026-09-05 15:22 UTCEPSS rescoreEPSS 15% · 96th percentile
  52. 2026-09-04 13:54 UTCEPSS rescoreEPSS 15% · 96th percentile
  53. 2026-09-04 04:59 UTCEPSS rescoreEPSS 15% · 96th percentile
  54. 2026-08-30 01:14 UTCEPSS rescoreEPSS 15% · 96th percentile
  55. 2026-08-08 16:30 UTCEPSS rescoreEPSS 15% · 96th percentile
  56. 2026-08-07 16:20 UTCEPSS rescoreEPSS 15% · 96th percentile
  57. 2026-08-06 13:41 UTCEPSS rescoreEPSS 15% · 96th percentile
  58. 2026-08-05 19:11 UTCEPSS rescoreEPSS 15% · 96th percentile
  59. 2026-08-04 15:03 UTCEPSS rescoreEPSS 15% · 96th percentile
  60. 2026-08-04 10:28 UTCEPSS rescoreEPSS 15% · 96th percentile
  61. 2026-07-28 15:30 UTCEPSS rescoreEPSS 15% · 96th percentile
  62. 2026-07-25 14:11 UTCEPSS rescoreEPSS 15% · 96th percentile
  63. 2026-07-24 14:11 UTCEPSS rescoreEPSS 15% · 96th percentile
  64. 2026-07-23 00:53 UTCEG score recompute
  65. 2026-07-23 00:32 UTCEG score recompute
  66. 2026-07-22 23:57 UTCEG score recompute
  67. 2026-07-22 21:36 UTCEG score recompute
  68. 2026-07-22 14:03 UTCEPSS rescoreEPSS 15% · 96th percentile
  69. 2026-07-21 15:19 UTCEPSS rescoreEPSS 15% · 96th percentile
  70. 2026-07-20 17:02 UTCEPSS rescoreEPSS 15% · 96th percentile
  71. 2026-07-16 16:58 UTCEPSS rescoreEPSS 15% · 96th percentile
  72. 2026-07-15 16:54 UTCEPSS rescoreEPSS 15% · 96th percentile
  73. 2026-07-15 01:55 UTCEPSS rescoreEPSS 15% · 96th percentile
  74. 2026-07-13 22:25 UTCEPSS rescoreEPSS 15% · 96th percentile

Publicly available exploits

(1 reference)

Public exploit code is referenced for this CVE (1 Exploit-DB entry). No fix has been recorded since the CVE record was published in 2007. If the vendor still supports the product, apply the fixed version it names; if it no longer does, isolate the affected system or retire the product.

  • Exploit-DBEDB-3394✓ verified
    Published Mar 1, 2007

    PHP 4 - Userland ZVAL Reference Counter Overflow (PoC)

    Open source ↗

Frequently asked(5)

What is CVE-2007-1383?
CVE-2007-1383 is a critical-severity vulnerability; its CVE record was published on March 10, 2007. Integer overflow in the 16 bit variable reference counter in PHP 4 allows context-dependent attackers to execute arbitrary code by overflowing this counter, which causes the same variable to be destroyed twice, a related issue to CVE-2007-1286.
When was CVE-2007-1383 made public?
CVE-2007-1383 was made public on March 1, 2007: that is the date its CVE record's CNA, MITRE Corporation, gives for when the vulnerability was made public. The CVE record itself was published on March 10, 2007. EchelonGraph's copy of the record carries a last-modified date of April 23, 2026; the record at its source may have been updated since.
Is CVE-2007-1383 actively exploited?
CVE-2007-1383 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model places it in Tier 2 (Weaponized), which is not evidence of exploitation: Exploit-DB marks a public exploit for it as verified. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 15% probability of exploitation in the next 30 days (96th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2007-1383?
CVE-2007-1383 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2007-1383?
No fix for CVE-2007-1383 has been recorded since its CVE record was published in 2007. If the vendor still supports the product, apply the fixed version it names; if it no longer does, isolate the affected system (restrict network access to it, for example with a firewall, or keep it off the internet) or retire the product.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2007-1383

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