CVE-2024-25617

CRITICALNVD 5.39.0
EchelonGraph scoreHIGH confidence

“▲” beside the score: it is higher than NVD's CVSS score.

Score elevated to 9.0 because EPSS predicted 88% probability of exploitation within the next 30 days (99th percentile of EPSS-scored CVEs) when EchelonGraph scored this CVE. NVD baseline CVSS 5.3 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction (continuous uplift above 30%)
Sources: EPSS, NVD CVSS v3
Elevated

Also known asEUVD-2024-22939 (ENISA EUVD)Source: ENISA EUVD

9.0EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High exploitation likelihood — EPSS 88%
CISA-KEV: Not listedEPSS PROB: 88%CVSS: 5.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Squid is an open source caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a Collapse of Data into Unsafe Value bug ,Squid may be vulnerable to a Denial of Service attack against HTTP header parsing. This problem allows a remote client or a remote server to perform Denial of Service when sending oversized headers in HTTP messages. In versions of Squid prior to 6.5 this can be achieved if the request_header_max_size or reply_header_max_size settings are unchanged from the default. In Squid version 6.5 and later, the default setting of these parameters is safe. Squid will emit a critical warning in cache.log if the administrator is setting these parameters to unsafe values. Squid will not at this time prevent these settings from being changed to unsafe values. Users are advised to upgrade to version 6.5. There are no known workarounds for this vulnerability. This issue is also tracked as SQUID-2024:2

CVSS v3
5.3
EG Score
9.0CRITICALhigh confidence
EG Risk
74
EG Risk 74/100

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)
Severity53% × 45%
Impact severity (EG Severity): CVSS 5.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation88% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
88%
EPSS %ILE
99th
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 (9.0): severity, escalated by confirmed exploitation. This CVE's 9.0 is EPSS's lift toward 9.0 from its impact severity (EG Severity, CVSS 5.3 MEDIUM): a likelihood of exploitation, not impact.

EG Severity
5.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
88% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). 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 low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

February 14, 2024

Last Modified

June 25, 2025

Advisory Details (3)

Auto-updated Oct 13, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

SQUID-2024:2 Denial of Service in HTTP Header parser · Advisory · squid-cache/squid · GitHub

https://github.com/squid-cache/squid/security/advisories/GHSA-h5x6-w8mv-xfpr
GitHub commit

commit 72a3bbd5e431 (squid-cache/squid)

Fix landed in squid-cache/squid commit 72a3bbd5e431 — awaiting tagged release

https://github.com/squid-cache/squid/commit/72a3bbd5e431597c3fdb56d752bc56b010ba3817

Patch Availability(11)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntusquidclient (3.5.12-1ubuntu7.16+esm3) @ xenial2026-11-03ubuntu
ubuntusquidclient (4.10-1ubuntu1.10) @ focal2026-11-03ubuntu
redhatsquid:4-8020020240313150557.4cda2c842024-05-09redhat
redhatsquid-7:5.2-1.el9_0.62024-04-16redhat
redhatsquid:4-8040020240312224211.522a0ee42024-04-16redhat
redhatsquid-7:3.5.20-17.el7_9.102024-04-11redhat
redhatsquid-7:5.5-6.el9_3.82024-03-19redhat
redhatsquid:4-8090020240314114525.a75119d52024-03-19redhat
redhatsquid-7:5.5-5.el9_2.52024-03-06redhat
redhatsquid:4-8060020240227214219.ad008a3a2024-03-04redhat
redhatsquid:4-8080020240227184832.63b345852024-03-01redhat

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 rangeFix by version rangeDependents
squid4.13-10, 4.13-10+deb11u1, 4.13-10+deb11u2
  • every version up to 4.13-10+deb11u3: fixed in 4.13-10+deb11u3
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
squid5.7-2
  • every version up to 5.7-2+deb12u1: fixed in 5.7-2+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
squid—
  • every version up to 6.5-1: fixed in 6.5-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
squid—
  • every version up to 6.5-1: fixed in 6.5-1
—

Weakness Classification(2)

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 10× in last 7d / 43× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 180 rows 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 80 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 10:54 UTCEchelonGraph re-scored
  2. 2026-11-13 10:54 UTCVendor advisory
  3. 2026-11-12 13:06 UTCEchelonGraph re-scored
  4. 2026-11-12 13:06 UTCVendor advisory
  5. 2026-11-11 16:34 UTCEPSS rescoreEPSS 88% · 99th percentile
  6. 2026-11-11 15:16 UTCVendor advisory
  7. 2026-11-10 17:29 UTCEchelonGraph re-scored
  8. 2026-11-10 17:29 UTCVendor advisory
  9. 2026-11-09 19:40 UTCEchelonGraph re-scored
  10. 2026-11-09 19:40 UTCVendor advisory
  11. 2026-11-08 21:52 UTCEchelonGraph re-scored
  12. 2026-11-08 21:52 UTCVendor advisory
  13. 2026-11-08 16:35 UTCEPSS rescoreEPSS 88% · 99th percentile
  14. 2026-11-08 00:05 UTCEchelonGraph re-scored
  15. 2026-11-08 00:05 UTCVendor advisory
  16. 2026-11-07 02:17 UTCEchelonGraph re-scored
  17. 2026-11-07 02:17 UTCVendor advisory
  18. 2026-11-06 04:30 UTCEchelonGraph re-scored
  19. 2026-11-05 06:43 UTCEchelonGraph re-scored
  20. 2026-11-05 06:43 UTCVendor advisory
  21. 2026-11-04 22:25 UTCOSV refresh
  22. 2026-11-04 16:32 UTCEPSS rescoreEPSS 88% · 99th percentile
  23. 2026-11-04 08:56 UTCEchelonGraph re-scored
  24. 2026-11-04 08:56 UTCVendor advisory
  25. 2026-11-03 11:08 UTCEchelonGraph re-scored
Show 75 more
  1. 2026-11-03 11:08 UTCVendor advisory
  2. 2026-11-02 13:20 UTCEchelonGraph re-scored
  3. 2026-11-02 13:20 UTCVendor advisory
  4. 2026-11-01 16:31 UTCEPSS rescoreEPSS 88% · 99th percentile
  5. 2026-11-01 15:34 UTCVendor advisory
  6. 2026-10-31 17:47 UTCEchelonGraph re-scored
  7. 2026-10-31 17:47 UTCVendor advisory
  8. 2026-10-31 16:30 UTCEPSS rescoreEPSS 88% · 99th percentile
  9. 2026-10-30 19:58 UTCEchelonGraph re-scored
  10. 2026-10-30 19:58 UTCVendor advisory
  11. 2026-10-29 22:11 UTCEchelonGraph re-scored
  12. 2026-10-29 22:11 UTCVendor advisory
  13. 2026-10-29 00:24 UTCEchelonGraph re-scored
  14. 2026-10-29 00:24 UTCVendor advisory
  15. 2026-10-28 16:29 UTCEPSS rescoreEPSS 88% · 99th percentile
  16. 2026-10-28 02:36 UTCEchelonGraph re-scored
  17. 2026-10-28 02:36 UTCVendor advisory
  18. 2026-10-27 04:44 UTCEchelonGraph re-scored
  19. 2026-10-27 04:44 UTCVendor advisory
  20. 2026-10-26 16:29 UTCEPSS rescoreEPSS 88% · 99th percentile
  21. 2026-10-26 02:30 UTCVendor advisory
  22. 2026-10-25 17:16 UTCEchelonGraph re-scored
  23. 2026-10-25 16:30 UTCEPSS rescoreEPSS 88% · 99th percentile
  24. 2026-10-25 04:43 UTCEchelonGraph re-scored
  25. 2026-10-25 04:43 UTCVendor advisory
  26. 2026-10-24 06:56 UTCEchelonGraph re-scored
  27. 2026-10-24 06:56 UTCVendor advisory
  28. 2026-10-23 09:09 UTCEchelonGraph re-scored
  29. 2026-10-23 09:09 UTCVendor advisory
  30. 2026-10-22 11:17 UTCEchelonGraph re-scored
  31. 2026-10-22 11:17 UTCVendor advisory
  32. 2026-10-21 16:29 UTCEPSS rescoreEPSS 88% · 99th percentile
  33. 2026-10-21 13:29 UTCEchelonGraph re-scored
  34. 2026-10-21 13:29 UTCVendor advisory
  35. 2026-10-20 16:30 UTCEPSS rescoreEPSS 88% · 99th percentile
  36. 2026-10-20 15:17 UTCEchelonGraph re-scored
  37. 2026-10-20 15:17 UTCVendor advisory
  38. 2026-10-19 15:46 UTCVendor advisory
  39. 2026-10-18 17:58 UTCEchelonGraph re-scored
  40. 2026-10-18 17:58 UTCVendor advisory
  41. 2026-10-18 07:24 UTCEchelonGraph re-scored
  42. 2026-10-17 20:08 UTCEchelonGraph re-scored
  43. 2026-10-17 20:08 UTCVendor advisory
  44. 2026-10-16 22:18 UTCEchelonGraph re-scored
  45. 2026-10-16 22:18 UTCVendor advisory
  46. 2026-10-15 18:55 UTCEchelonGraph re-scored
  47. 2026-10-15 18:55 UTCVendor advisory
  48. 2026-10-14 16:30 UTCEPSS rescoreEPSS 88% · 99th percentile
  49. 2026-10-14 12:40 UTCEchelonGraph re-scored
  50. 2026-10-14 12:40 UTCVendor advisory
  51. 2026-10-13 12:34 UTCEchelonGraph re-scored
  52. 2026-10-13 12:34 UTCVendor advisory
  53. 2026-10-12 14:45 UTCEchelonGraph re-scored
  54. 2026-10-12 14:45 UTCVendor advisory
  55. 2026-10-11 21:24 UTCEchelonGraph re-scored
  56. 2026-10-11 16:18 UTCEchelonGraph re-scored
  57. 2026-10-09 20:05 UTCEPSS rescoreEPSS 88% · 99th percentile
  58. 2026-10-03 14:23 UTCEPSS rescoreEPSS 88% · 99th percentile
  59. 2026-09-30 19:14 UTCOSV refresh
  60. 2026-09-30 16:59 UTCEchelonGraph re-scored
  61. 2026-09-24 14:01 UTCEPSS rescoreEPSS 88% · 99th percentile
  62. 2026-09-16 05:11 UTCEPSS rescoreEPSS 88% · 99th percentile
  63. 2026-09-15 03:08 UTCEPSS rescoreEPSS 89% · 99th percentile
  64. 2026-09-12 01:53 UTCOSV refresh
  65. 2026-09-11 09:34 UTCEPSS rescoreEPSS 89% · 99th percentile
  66. 2026-09-06 13:46 UTCEPSS rescoreEPSS 89% · 99th percentile
  67. 2026-09-05 15:26 UTCEPSS rescoreEPSS 89% · 99th percentile
  68. 2026-09-01 13:52 UTCEPSS rescoreEPSS 89% · 99th percentile
  69. 2026-08-30 19:15 UTCEPSS rescoreEPSS 89% · 99th percentile
  70. 2026-08-28 21:39 UTCEPSS rescoreEPSS 89% · 99th percentile
  71. 2026-08-27 14:23 UTCEPSS rescoreEPSS 89% · 99th percentile
  72. 2026-08-25 13:47 UTCEPSS rescoreEPSS 89% · 99th percentile
  73. 2026-08-24 07:28 UTCOSV refresh
  74. 2026-08-21 23:47 UTCEPSS rescoreEPSS 89% · 99th percentile
  75. 2026-08-13 21:58 UTCEPSS rescoreEPSS 89% · 99th percentile

Frequently asked(5)

What is CVE-2024-25617?
CVE-2024-25617 is a critical-severity vulnerability; its CVE record was published on February 14, 2024. Squid is an open source caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a Collapse of Data into Unsafe Value bug ,Squid may be vulnerable to a Denial of Service attack against HTTP header parsing. This problem allows a remote client or a remote server to perform Denial of…
When was the CVE record for CVE-2024-25617 published?
The CVE record for CVE-2024-25617 was published on February 14, 2024. 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 June 25, 2025; the record at its source may have been updated since.
Is CVE-2024-25617 actively exploited?
CVE-2024-25617 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-25617?
CVE-2024-25617 has a CVSS v3 base score of 5.3 (NVD). EchelonGraph synthesises NVD + FIRST EPSS into a combined EG score of 9.0 (CRITICAL).
How do I remediate CVE-2024-25617?
A fix for CVE-2024-25617 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2024-25617 are linked in the Vendor Advisories panel on this page.

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