CVE-2026-5435

HIGHPre-NVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-04-28. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.3Exploit: None knownExposed: 0

A fix is available — apply it.

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.

CVSS v3
7.3
EG Score
7.3(medium)
EG Risk
48(Track)
EG Risk 48/100SSVC: 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
Severity73% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

April 28, 2026

Last Modified

July 14, 2026

Advisory Details (2)

Auto-updated May 6, 2026
No patch confirmed yet.
generic

34033 – (CVE-2026-5435) resolv/ns_print.c: ns_sprintrrf TSIG path bypasses buflen and can overflow caller buffer

https://sourceware.org/bugzilla/show_bug.cgi?id=34033
generic

The GNU C Library security advisories update for 2026-04-28

https://inbox.sourceware.org/libc-announce/[email protected]/T/#u

Vendor Advisories for CVE-2026-5435(12)

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

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatinsights-proxy/insights-proxy-container-rhel9:17864336562026-08-11redhat
redhatrhosdt/opentelemetry-rhel9-operator:17857045472026-08-04redhat
redhatdiscovery/discovery-ui-rhel9:17848217502026-07-27redhat
redhatrhui5/rhua-rhel9:17847950762026-07-23redhat
redhatrhosdt/tempo-rhel9-operator:17847757822026-07-23redhat
redhatglibc-0:2.34-274.el9_82026-07-22redhat
redhatglibc-0:2.28-251.el8_10.402026-07-21redhat
redhatglibc-0:2.39-128.el10_22026-07-21redhat
redhatglibc-main-2.42-12.hum12026-05-01redhat

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 rangeFixed inDependents
glibc2.31-13 ... 2.43-2 (208 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
glibc2.36-10~0 ... 2.44-1 (130 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
glibc2.41-12 ... 2.44-1 (36 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
glibc2.41-12 ... 2.43-2 (27 versions)2.43-3—

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 6× in last 7d / 24× 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 243 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-5435?
CVE-2026-5435 is a high vulnerability published on April 28, 2026. The deprecated functions nsprintrrf, nsprintrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.
When was CVE-2026-5435 disclosed?
CVE-2026-5435 was first published in the National Vulnerability Database on April 28, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-5435 actively exploited?
CVE-2026-5435 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 84.9% of all scored CVEs.
What is the CVSS score of CVE-2026-5435?
CVE-2026-5435 has a CVSS v3.1 base score of 7.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-5435?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-5435, 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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