CVE-2026-61477

LOWPre-NVD 2.32.3—
EchelonGraph scoreMEDIUM confidence

Score 2.3 from GitHub Security Advisory (severity: LOW) published 2026-08-07. A secondary CVSS source baseline 2.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
2.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 2.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

An injection vulnerability was found in libvirt's virtual network driver. The network XML parser does not strip newline characters from DNS TXT record value attributes and SRV record domain/target attributes. These values are written verbatim into the dnsmasq configuration file generated by the network driver, allowing a user with permission to define virtual networks to inject arbitrary dnsmasq configuration directives such as dhcp-script, leading to arbitrary command execution as root.

CVSS v3
2.3
EG Score
2.3LOWmedium confidence
EG Risk
10
EG Risk 10/100CISA SSVC

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
Severity23% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
4th
KEV
Not listed

CISA SSVCTrack 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). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 7, 2026

Last Modified

August 14, 2026

References (3)

Vendor Advisories for CVE-2026-61477(2)

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
ubuntulibvirt0-hwe (12.0.0-1ubuntu5.5) @ resolute2026-10-04ubuntu

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libvirt10.0.0-1 ... 9.9.0-1 (94 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libvirt10.0.0-1 ... 9.9.0-1 (71 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libvirt11.3.0-3, 11.3.0-3+deb13u1, 11.3.0-3+deb13u2
  • every version up to 11.3.0-3+deb13u3: fixed in 11.3.0-3+deb13u3
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libvirt11.10.0-1 ... 12.5.0-1 (17 versions)
  • every version up to 12.6.0-1: fixed in 12.6.0-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 10× in last 7d / 46× 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.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 05:44 UTCEG score recompute
  3. 2026-10-04 05:44 UTCVendor advisory
  4. 2026-10-04 05:44 UTCGHSA enrichment
  5. 2026-10-02 17:56 UTCEPSS rescore
  6. 2026-10-01 19:50 UTCEPSS rescore
  7. 2026-10-01 01:43 UTCEG score recompute
  8. 2026-10-01 01:43 UTCVendor advisory
  9. 2026-10-01 01:43 UTCGHSA enrichment
  10. 2026-09-30 15:03 UTCEPSS rescore
  11. 2026-09-28 13:51 UTCEPSS rescore
  12. 2026-09-28 02:27 UTCEG score recompute
  13. 2026-09-28 02:27 UTCVendor advisory
  14. 2026-09-28 02:27 UTCGHSA enrichment
  15. 2026-09-26 15:59 UTCEPSS rescore
  16. 2026-09-25 04:16 UTCEG score recompute
  17. 2026-09-25 04:16 UTCVendor advisory
  18. 2026-09-25 04:16 UTCGHSA enrichment
  19. 2026-09-23 17:54 UTCEPSS rescore
  20. 2026-09-22 05:01 UTCEG score recompute
  21. 2026-09-22 05:01 UTCVendor advisory
  22. 2026-09-22 05:01 UTCGHSA enrichment
  23. 2026-09-20 20:16 UTCEPSS rescore
  24. 2026-09-19 08:04 UTCEG score recompute
  25. 2026-09-19 08:04 UTCVendor advisory
Show 75 more
  1. 2026-09-19 08:04 UTCGHSA enrichment
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-16 11:09 UTCEG score recompute
  5. 2026-09-16 11:09 UTCVendor advisory
  6. 2026-09-16 11:09 UTCGHSA enrichment
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-13 11:37 UTCEG score recompute
  9. 2026-09-13 11:37 UTCVendor advisory
  10. 2026-09-13 11:37 UTCGHSA enrichment
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-11 09:37 UTCEPSS rescore
  13. 2026-09-10 14:41 UTCEG score recompute
  14. 2026-09-10 14:41 UTCGHSA enrichment
  15. 2026-09-10 09:35 UTCEPSS rescore
  16. 2026-09-08 22:01 UTCEPSS rescore
  17. 2026-09-07 17:45 UTCEG score recompute
  18. 2026-09-07 17:45 UTCVendor advisory
  19. 2026-09-07 17:45 UTCGHSA enrichment
  20. 2026-09-07 16:01 UTCEPSS rescore
  21. 2026-09-06 13:47 UTCEPSS rescore
  22. 2026-09-04 09:06 UTCEG score recompute
  23. 2026-09-04 09:06 UTCVendor advisory
  24. 2026-09-04 09:06 UTCGHSA enrichment
  25. 2026-09-04 05:07 UTCEPSS rescore
  26. 2026-09-02 14:12 UTCEPSS rescore
  27. 2026-09-01 13:54 UTCEPSS rescore
  28. 2026-09-01 07:19 UTCEG score recompute
  29. 2026-09-01 07:19 UTCVendor advisory
  30. 2026-09-01 07:19 UTCGHSA enrichment
  31. 2026-09-01 04:40 UTCEPSS rescore
  32. 2026-08-30 19:17 UTCEPSS rescore
  33. 2026-08-30 01:22 UTCEPSS rescore
  34. 2026-08-29 10:24 UTCEG score recompute
  35. 2026-08-29 10:24 UTCVendor advisory
  36. 2026-08-29 10:24 UTCGHSA enrichment
  37. 2026-08-28 21:42 UTCEPSS rescore
  38. 2026-08-27 14:25 UTCEPSS rescore
  39. 2026-08-26 14:46 UTCEPSS rescore
  40. 2026-08-26 08:08 UTCEG score recompute
  41. 2026-08-26 08:08 UTCVendor advisory
  42. 2026-08-26 08:08 UTCGHSA enrichment
  43. 2026-08-25 13:49 UTCEPSS rescore
  44. 2026-08-23 11:12 UTCEG score recompute
  45. 2026-08-23 11:12 UTCGHSA enrichment
  46. 2026-08-23 00:19 UTCEPSS rescore
  47. 2026-08-21 23:49 UTCEPSS rescore
  48. 2026-08-20 22:55 UTCEPSS rescore
  49. 2026-08-20 14:17 UTCEG score recompute
  50. 2026-08-20 14:17 UTCGHSA enrichment
  51. 2026-08-19 17:04 UTCEPSS rescore
  52. 2026-08-18 13:48 UTCEPSS rescore
  53. 2026-08-17 16:31 UTCEG score recompute
  54. 2026-08-17 16:31 UTCGHSA enrichment
  55. 2026-08-17 13:47 UTCEPSS rescore
  56. 2026-08-16 14:56 UTCEPSS rescore
  57. 2026-08-15 01:30 UTCEPSS rescore
  58. 2026-08-14 19:19 UTCEG score recompute
  59. 2026-08-14 19:19 UTCGHSA enrichment
  60. 2026-08-13 22:00 UTCEPSS rescore
  61. 2026-08-13 13:31 UTCEG score recompute
  62. 2026-08-13 13:31 UTCGHSA enrichment
  63. 2026-08-12 13:51 UTCEPSS rescore
  64. 2026-08-11 00:00 UTCEPSS rescore
  65. 2026-08-10 16:36 UTCEG score recompute
  66. 2026-08-10 16:36 UTCGHSA enrichment
  67. 2026-08-09 13:47 UTCEPSS rescore
  68. 2026-08-08 16:37 UTCEPSS rescore
  69. 2026-08-07 19:29 UTCEG score recompute
  70. 2026-08-07 19:29 UTCGHSA enrichment
  71. 2026-08-07 18:29 UTCEG score recompute
  72. 2026-08-07 18:29 UTCGHSA enrichment
  73. 2026-08-07 14:26 UTCEG score recompute
  74. 2026-08-07 14:13 UTCEG score recompute
  75. 2026-08-07 14:12 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-61477?
CVE-2026-61477 is a low vulnerability published on August 7, 2026. An injection vulnerability was found in libvirt's virtual network driver. The network XML parser does not strip newline characters from DNS TXT record value attributes and SRV record domain/target attributes. These values are written verbatim into the dnsmasq configuration file generated by the…
When was CVE-2026-61477 disclosed?
CVE-2026-61477 was first published on August 7, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-61477 actively exploited?
CVE-2026-61477 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-61477?
CVE-2026-61477 has a CVSS base score of 2.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-61477?
A fix for CVE-2026-61477 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-61477 are linked in the Vendor Advisories panel on this page.

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