CVE-2026-45705

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (41st 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
5.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (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: 0.5%CVSS: 5.3Exploit: No code on recordExposed services: Not assessed

The CVE record names the fixed release — apply it.

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. In versions prior to 3.6.6 and 4.0.0-rc1, the find_line_delimiter() function in the multipart body parser performs an out-of-bounds read via strncmp() when searching for MIME boundary delimiters. After finding a -- pattern near the end of the body, the function compares delimiter.len bytes (typically 20-70) starting from a position at or past the logical end of the body buffer, reading past the body boundary. The bug triggers when a SIP message has Content-Type: multipart/mixed with a boundary parameter and its body contains -- within two to three bytes of the body's end without being followed by the actual boundary delimiter. This issue has been fixed in versions 3.6.6 and 4.0.0-rc1.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity53% × 45%
The EG Score, 5.3 of 10.
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 or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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.
EPSS PROB
0.5%
EPSS %ILE
41st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

The CVE record names the fixed release. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (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

August 4, 2026

Last Modified

September 8, 2026

Advisory Details (3)

Auto-updated Aug 4, 2026
Fix named in the CVE record. Sources: github, github_commit.
GitHub commit

commit 5f103effaf5f (OpenSIPS/opensips)

Fix landed in OpenSIPS/opensips commit 5f103effaf5f — awaiting tagged release

https://github.com/OpenSIPS/opensips/commit/5f103effaf5f372cccffe0b138f16998eba12668
GitHub commit

commit 4d23613b6557 (OpenSIPS/opensips)

Fix landed in OpenSIPS/opensips commit 4d23613b6557 — awaiting tagged release

https://github.com/OpenSIPS/opensips/commit/4d23613b65579b073784a07a65d3bf52443a4efb
GitHub advisoryMentions a patch (unverified)

OOB Read in Multipart Body Boundary Parsing · Advisory · OpenSIPS/opensips · GitHub

https://github.com/OpenSIPS/opensips/security/advisories/GHSA-chxf-9368-fqcp

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 39× 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 100 of 108 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. None are among the latest 100 rows. The 8 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  3. 2026-10-12 16:04 UTCEG score recompute
  4. 2026-10-11 19:46 UTCEG score recompute
  5. 2026-10-11 17:00 UTCEG score recompute
  6. 2026-10-11 14:26 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-10-06 23:41 UTCEG score recompute
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  14. 2026-10-05 19:40 UTCEG score recompute
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  17. 2026-10-04 06:08 UTCEG score recompute
  18. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  19. 2026-10-02 10:05 UTCEG score recompute
  20. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  21. 2026-10-01 02:24 UTCEG score recompute
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  23. 2026-09-29 06:24 UTCEG score recompute
  24. 2026-09-27 17:57 UTCEG score recompute
  25. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
Show 75 more
  1. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-09-25 04:39 UTCEG score recompute
  3. 2026-09-23 03:02 UTCEG score recompute
  4. 2026-09-22 03:02 UTCEG score recompute
  5. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  6. 2026-09-20 03:53 UTCEG score recompute
  7. 2026-09-19 03:51 UTCEG score recompute
  8. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  9. 2026-09-18 03:51 UTCEG score recompute
  10. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  11. 2026-09-17 03:51 UTCEG score recompute
  12. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  13. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  14. 2026-09-16 03:46 UTCEG score recompute
  15. 2026-09-14 02:46 UTCEG score recompute
  16. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  17. 2026-09-13 02:42 UTCEG score recompute
  18. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  19. 2026-09-12 02:41 UTCEG score recompute
  20. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  21. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  22. 2026-09-11 02:37 UTCEG score recompute
  23. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  24. 2026-09-10 02:33 UTCEG score recompute
  25. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  26. 2026-09-07 18:28 UTCEG score recompute
  27. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  28. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  29. 2026-09-06 10:17 UTCEG score recompute
  30. 2026-09-05 10:11 UTCEG score recompute
  31. 2026-09-04 10:07 UTCEG score recompute
  32. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  33. 2026-09-03 07:18 UTCEG score recompute
  34. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  35. 2026-09-01 22:58 UTCEG score recompute
  36. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  37. 2026-08-30 21:42 UTCEG score recompute
  38. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  39. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  40. 2026-08-29 21:41 UTCEG score recompute
  41. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  42. 2026-08-27 19:56 UTCEG score recompute
  43. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  44. 2026-08-26 19:09 UTCEG score recompute
  45. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  46. 2026-08-25 15:59 UTCEG score recompute
  47. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  48. 2026-08-24 15:59 UTCEG score recompute
  49. 2026-08-23 15:58 UTCEG score recompute
  50. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  51. 2026-08-22 15:58 UTCEG score recompute
  52. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  53. 2026-08-21 15:58 UTCEG score recompute
  54. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  55. 2026-08-20 15:58 UTCEG score recompute
  56. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  57. 2026-08-18 15:47 UTCEG score recompute
  58. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  59. 2026-08-17 14:33 UTCEG score recompute
  60. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  61. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  62. 2026-08-16 14:33 UTCEG score recompute
  63. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  64. 2026-08-15 14:33 UTCEG score recompute
  65. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  66. 2026-08-14 14:32 UTCEG score recompute
  67. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  68. 2026-08-12 14:32 UTCEG score recompute
  69. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  70. 2026-08-11 14:31 UTCEG score recompute
  71. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  72. 2026-08-09 14:30 UTCEG score recompute
  73. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  74. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  75. 2026-08-08 14:30 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-45705?
CVE-2026-45705 is a medium-severity vulnerability; its CVE record was published on August 4, 2026. OpenSIPS is a Session Initiation Protocol (SIP) server implementation. In versions prior to 3.6.6 and 4.0.0-rc1, the findlinedelimiter() function in the multipart body parser performs an out-of-bounds read via strncmp() when searching for MIME boundary delimiters. After finding a -- pattern near…
When was the CVE record for CVE-2026-45705 published?
The CVE record for CVE-2026-45705 was published on August 4, 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 September 8, 2026; the record at its source may have been updated since.
Is CVE-2026-45705 actively exploited?
CVE-2026-45705 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45705?
CVE-2026-45705 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-45705?
The CVE record for CVE-2026-45705 names the fix: "This issue has been fixed in versions 3.6.6 and 4.0.0-rc1."

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-45705

Explore →

Is Your Infrastructure Affected by CVE-2026-45705?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs