CVE-2020-6829

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 5.3Exploit: None knownExposed: 0

A fix is available — apply it.

When performing EC scalar point multiplication, the wNAF point multiplication algorithm was used; which leaked partial information about the nonce used during signature generation. Given an electro-magnetic trace of a few signature generations, the private key could have been computed. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

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
Severity53% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
73%
KEV
Not listed

Published

October 28, 2020

Last Modified

August 19, 2026

Advisory Details (4)

Auto-updated Aug 19, 2026
⚠️ Active exploitation confirmed. Patch available.
generic

Security Vulnerabilities fixed in Firefox for Android 80 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2020-39/
generic

Security Vulnerabilities fixed in Firefox 80 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2020-36/
generic Patch Available

[SECURITY] [DLA 3327-1] nss security update

https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html
generic🔴 Active Exploitation

1631583 - (CVE-2020-6829) Side channel attack on ECDSA signature generation

https://bugzilla.mozilla.org/show_bug.cgi?id=1631583

Vendor Advisories for CVE-2020-6829(4)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibnss3-tools (2:3.35-2ubuntu2.11) @ bionic2026-08-19ubuntu
ubuntufirefox-mozsymbols (80.0+build2-0ubuntu0.16.04.1) @ xenial2026-08-19ubuntu
redhatopenshiftdo/odo-init-image-rhel7:1.1.3-22021-03-22redhat
redhatnss-0:3.53.1-17.el8_32021-02-16redhat
redhatnss-util-0:3.53.1-1.el7_92020-09-29redhat

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

(13 across 13 ecosystems)
Alpine:v3.12(1)
PackageVulnerable rangeFixed inDependents
nss—3.55-r0—
Alpine:v3.19(1)
PackageVulnerable rangeFixed inDependents
nss—3.55-r0—
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
nss—3.55-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
nss—3.55-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
nss—3.55-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
nss—3.55-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
nss—3.55-r0—
Debian:10(1)
PackageVulnerable rangeFixed inDependents
nss2:3.42.1-1 ... 2:3.42.1-1+deb10u5 (6 versions)2:3.42.1-1+deb10u6—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
nss—2:3.55-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
nss—2:3.55-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
nss—2:3.55-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
nss—2:3.55-1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
nss2:3.26.2-1.1, 2:3.26.2-1.1+deb9u12:3.26.2-1.1+deb9u2—

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 6× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 157 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2020-6829?
CVE-2020-6829 is a medium vulnerability published on October 28, 2020. When performing EC scalar point multiplication, the wNAF point multiplication algorithm was used; which leaked partial information about the nonce used during signature generation. Given an electro-magnetic trace of a few signature generations, the private key could have been computed. This…
When was CVE-2020-6829 disclosed?
CVE-2020-6829 was first published in the National Vulnerability Database on October 28, 2020, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-6829 actively exploited?
CVE-2020-6829 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 27.5% of all scored CVEs.
What is the CVSS score of CVE-2020-6829?
CVE-2020-6829 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2020-6829?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-6829, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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