CVE-2026-13122

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-07-06. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
5.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachable assertion when external-auth is enabled

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

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.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (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

July 6, 2026

Last Modified

July 9, 2026

References (1)

Vendor Advisories for CVE-2026-13122(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuopenvpn (2.7.0-1ubuntu1.2) @ resolute2026-09-23ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
openvpn—
  • 2.6.0 up to 2.7.5-r0: fixed in 2.7.5-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
openvpn2.5.1-3 ... 2.7.5-1~bpo13+1 (63 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
openvpn2.6.11-1 ... 2.6.9-1 (15 versions)
  • every version up to 2.6.14-0+deb12u2: fixed in 2.6.14-0+deb12u2
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
openvpn2.6.14-1, 2.6.14-1+deb13u1, 2.6.14-1+deb13u2
  • every version up to 2.6.14-1+deb13u3: fixed in 2.6.14-1+deb13u3
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
openvpn2.6.14-1 ... 2.7.5-1~bpo13+1 (24 versions)
  • every version up to 2.7.5-1: fixed in 2.7.5-1
—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 11× in last 7d / 35× 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 198 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 98 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 20:11 UTCEG score recompute
  2. 2026-10-11 18:24 UTCEG score recompute
  3. 2026-10-11 14:57 UTCEG score recompute
  4. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  5. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  6. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  7. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  8. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  9. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  10. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  11. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  12. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  13. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  14. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  15. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  16. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  17. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  18. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  19. 2026-09-23 06:24 UTCEG score recompute
  20. 2026-09-23 06:24 UTCVendor advisory
  21. 2026-09-23 06:24 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  22. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  23. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  24. 2026-09-18 06:00 UTCEG score recompute
  25. 2026-09-18 06:00 UTCVendor advisory
Show 75 more
  1. 2026-09-18 06:00 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  2. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  3. 2026-09-13 16:47 UTCEG score recompute
  4. 2026-09-13 16:47 UTCVendor advisory
  5. 2026-09-13 16:47 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  6. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  7. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-09-12 13:38 UTCEG score recompute
  9. 2026-09-12 13:38 UTCVendor advisory
  10. 2026-09-12 13:38 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  11. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  12. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  13. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  14. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  15. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  16. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  17. 2026-09-05 23:12 UTCEG score recompute
  18. 2026-09-05 23:12 UTCVendor advisory
  19. 2026-09-05 23:12 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  20. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  21. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  22. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  23. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  24. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  25. 2026-08-30 08:15 UTCEG score recompute
  26. 2026-08-30 08:15 UTCVendor advisory
  27. 2026-08-30 08:15 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  28. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  29. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  30. 2026-08-28 04:31 UTCEG score recompute
  31. 2026-08-28 04:31 UTCVendor advisory
  32. 2026-08-28 04:30 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  33. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  34. 2026-08-27 02:17 UTCEG score recompute
  35. 2026-08-27 02:17 UTCVendor advisory
  36. 2026-08-27 02:17 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  37. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  38. 2026-08-25 13:33 UTCEG score recompute
  39. 2026-08-25 13:33 UTCVendor advisory
  40. 2026-08-25 13:33 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  41. 2026-08-24 11:04 UTCEG score recompute
  42. 2026-08-24 11:04 UTCVendor advisory
  43. 2026-08-24 11:03 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  44. 2026-08-23 08:55 UTCEG score recompute
  45. 2026-08-23 08:55 UTCVendor advisory
  46. 2026-08-23 08:55 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  47. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  48. 2026-08-22 06:48 UTCEG score recompute
  49. 2026-08-22 06:48 UTCVendor advisory
  50. 2026-08-22 06:48 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  51. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  52. 2026-08-21 04:40 UTCEG score recompute
  53. 2026-08-21 04:40 UTCVendor advisory
  54. 2026-08-21 04:40 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  55. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  56. 2026-08-20 02:30 UTCEG score recompute
  57. 2026-08-20 02:30 UTCVendor advisory
  58. 2026-08-20 02:30 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  59. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  60. 2026-08-18 20:49 UTCEG score recompute
  61. 2026-08-18 20:49 UTCVendor advisory
  62. 2026-08-18 20:49 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  63. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  64. 2026-08-17 12:16 UTCEG score recompute
  65. 2026-08-17 12:16 UTCVendor advisory
  66. 2026-08-17 12:16 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  67. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  68. 2026-08-16 09:59 UTCEG score recompute
  69. 2026-08-16 09:59 UTCVendor advisory
  70. 2026-08-16 09:59 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  71. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  72. 2026-08-15 07:52 UTCEG score recompute
  73. 2026-08-15 07:52 UTCVendor advisory
  74. 2026-08-15 07:52 UTCGHSA enrichmentGHSA-m5x7-29rp-3xmr · GitHub CVSS 5.3
  75. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 21st percentile

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Frequently asked(5)

What is CVE-2026-13122?
CVE-2026-13122 is a medium-severity vulnerability; its CVE record was published on July 6, 2026. OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachable assertion when external-auth is enabled
When was the CVE record for CVE-2026-13122 published?
The CVE record for CVE-2026-13122 was published on July 6, 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 July 9, 2026; the record at its source may have been updated since.
Is CVE-2026-13122 actively exploited?
CVE-2026-13122 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-13122?
CVE-2026-13122 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-13122?
A fix for CVE-2026-13122 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-13122 are linked in the Vendor Advisories panel on this page.

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