CVE-2023-29499

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.8% (55th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 5.5 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2023-09-14) is not newer than that change (2026-10-14), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in GLib. GVariant deserialization fails to validate that the input conforms to the expected format, leading to denial of service.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.8% × 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
0.8%
EPSS %ILE
55th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-20). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

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

September 14, 2023

Last Modified

October 14, 2026

Advisory Details (6)

Auto-updated Oct 14, 2026
Patch available. Sources: redhat.
Web pageMentions a patch (unverified)

[SECURITY] [DLA 3583-1] glib2.0 security update

https://lists.debian.org/debian-lts-announce/2023/09/msg00030.html
Web page

(CVE-2023-29499) GVariant offset table entry size is not checked in is_normal() (#2794) · Issues · GNOME / GLib · GitLab

https://gitlab.gnome.org/GNOME/glib/-/issues/2794
Red HatMentions a patch (unverified)

2211828 – (CVE-2023-29499) CVE-2023-29499 glib: GVariant offset table entry size is not checked in is_normal()

Affected: Red Hat Enterprise Linux 9

https://bugzilla.redhat.com/show_bug.cgi?id=2211828
Red HatMentions a patch (unverified)

CVE-2023-29499 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2023-29499
Web page

GLib: Multiple Vulnerabilities (GLSA 202311-18) — Gentoo security

https://security.gentoo.org/glsa/202311-18

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibglib2.0-tests (2.56.4-0ubuntu0.18.04.9+esm3) @ bionic2026-10-21ubuntu
ubuntulibglib2.0-dev-bin (2.72.4-0ubuntu2.2) @ jammy2026-10-21ubuntu
redhatmingw-glib2-0:2.78.0-1.el92024-04-30redhat
redhatglib2-0:2.68.4-11.el92023-11-07redhat

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)
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
glib2.02.58.3-2, 2.58.3-2+deb10u1, 2.58.3-2+deb10u2, 2.58.3-2+deb10u3, 2.58.3-2+deb10u4
  • every version up to 2.58.3-2+deb10u5: fixed in 2.58.3-2+deb10u5
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
glib2.02.66.8-1
  • every version up to 2.66.8-1+deb11u1: fixed in 2.66.8-1+deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
glib2.0—
  • every version up to 2.74.4-1: fixed in 2.74.4-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
glib2.0—
  • every version up to 2.74.4-1: fixed in 2.74.4-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
glib2.0—
  • every version up to 2.74.4-1: fixed in 2.74.4-1
—

Weakness Classification(1)

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

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 11× in last 7d / 40× 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 93 of 203 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. 7 repeat rows among the latest 100 are merged into the row they repeat. The 110 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  2. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  3. 2026-10-21 09:22 UTCEG score recompute
  4. 2026-10-21 09:22 UTCVendor advisory
  5. 2026-10-21 09:22 UTCGHSA enrichmentGHSA-794g-pjcw-ggfp · GitHub severity HIGH · GitHub CVSS 5.5
  6. 2026-10-20 16:29 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  7. 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  8. 2026-10-18 16:29 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  9. 2026-10-18 08:05 UTCEG score recompute
  10. 2026-10-17 16:29 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  11. 2026-10-16 16:35 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  12. 2026-10-15 16:29 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  13. 2026-10-14 23:56 UTCEG score recompute▲ 2.00
  14. 2026-10-14 23:56 UTCVendor advisory
  15. 2026-10-14 23:55 UTCGHSA enrichmentGHSA-794g-pjcw-ggfp · GitHub severity HIGH · GitHub CVSS 5.5
  16. 2026-10-14 23:24 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  17. 2026-10-14 16:29 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  18. 2026-10-13 16:29 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  19. 2026-10-13 01:24 UTCOSV refresh
  20. 2026-10-12 18:28 UTCEG score recompute
  21. 2026-10-12 16:30 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  22. 2026-10-11 21:54 UTCEG score recompute
  23. 2026-10-11 13:45 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  24. 2026-10-10 19:57 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  25. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
Show 68 more
  1. 2026-10-08 17:06 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  2. 2026-10-07 23:45 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  3. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  4. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  5. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  6. 2026-10-02 16:23 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  7. 2026-10-01 19:47 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  8. 2026-09-30 16:21 UTCEG score recompute
  9. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  10. 2026-09-29 15:16 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  11. 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  12. 2026-09-27 13:42 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  13. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  14. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  15. 2026-09-23 13:45 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  16. 2026-09-22 23:32 UTCOSV refresh
  17. 2026-09-22 14:45 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  18. 2026-09-16 14:05 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  19. 2026-09-12 14:58 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  20. 2026-09-11 14:50 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  21. 2026-09-11 09:34 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  22. 2026-09-08 21:57 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  23. 2026-09-07 15:59 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  24. 2026-09-06 13:45 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  25. 2026-09-05 15:25 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  26. 2026-09-04 13:58 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  27. 2026-09-04 05:04 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  28. 2026-09-03 18:16 UTCOSV refresh
  29. 2026-09-02 14:09 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  30. 2026-09-01 13:51 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  31. 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  32. 2026-08-30 01:19 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  33. 2026-08-28 21:38 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  34. 2026-08-27 14:23 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  35. 2026-08-26 14:43 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  36. 2026-08-25 13:46 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  37. 2026-08-24 14:14 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  38. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  39. 2026-08-21 23:46 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  40. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  41. 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  42. 2026-08-18 13:46 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  43. 2026-08-17 13:44 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  44. 2026-08-17 07:31 UTCOSV refresh
  45. 2026-08-16 14:53 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  46. 2026-08-16 02:12 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  47. 2026-08-15 01:28 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  48. 2026-08-13 21:58 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  49. 2026-08-12 13:48 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  50. 2026-08-11 13:39 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  51. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  52. 2026-08-08 16:34 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  53. 2026-08-07 16:24 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  54. 2026-08-06 13:44 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  55. 2026-08-05 19:15 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  56. 2026-08-04 15:07 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  57. 2026-08-04 10:35 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  58. 2026-08-03 10:34 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  59. 2026-08-02 02:24 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  60. 2026-08-02 02:06 UTCOSV refresh
  61. 2026-08-01 04:13 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  62. 2026-07-30 16:26 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  63. 2026-07-30 01:28 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  64. 2026-07-28 15:34 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  65. 2026-07-27 14:10 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  66. 2026-07-26 14:52 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  67. 2026-07-25 14:16 UTCEPSS rescoreEPSS 0.8% · 51st percentile
  68. 2026-07-24 14:15 UTCEPSS rescoreEPSS 0.8% · 51st percentile

Frequently asked(5)

What is CVE-2023-29499?
CVE-2023-29499 is a high-severity vulnerability; its CVE record was published on September 14, 2023. A flaw was found in GLib. GVariant deserialization fails to validate that the input conforms to the expected format, leading to denial of service.
When was CVE-2023-29499 made public?
CVE-2023-29499 was made public on December 14, 2022: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on September 14, 2023. EchelonGraph's copy of the record carries a last-modified date of October 14, 2026; the record at its source may have been updated since.
Is CVE-2023-29499 actively exploited?
CVE-2023-29499 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (55th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-29499?
CVE-2023-29499 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2023-29499?
A fix for CVE-2023-29499 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-29499 are linked in the Vendor Advisories panel on this page.

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