CVE-2026-27755

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-02-27. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

SODOLA SL902-SWTGW124AS firmware versions through 200.1.20 contain a weak session identifier generation vulnerability that allows attackers to forge authenticated sessions by computing predictable MD5-based cookies. Attackers who know or guess valid credentials can calculate the session identifier offline and bypass authentication without completing the login flow, gaining unauthorized access to the device.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
34%
KEV
Not listed

Published

February 27, 2026

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

SODOLA SL902-SWTGW124AS <= 200.1.20 Predictable Session ID | Advisories | VulnCheck

https://www.vulncheck.com/advisories/sodola-sl902-swtgw124as-predictable-session-id
generic

SODOLA 6 Port 2.5G Easy Web Managed Switch, 4 x 2.5G Base-T Ports, 2 x 10G SFP, ,Static Aggregation/QoS/VLAN/IGMP, 2.5Gb Network Home-lab Switch

https://www.sodola-network.com/products/sodola-6-port-2-5g-easy-web-managed-switch-4-x-2-5g-base-t-ports-2-x-10g-sfp-static-aggregation-qos-vlan-igmp-2-5gb-network-home-lab-switch

Weakness Classification(1)

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

Data Freshness Timeline

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-27755?
CVE-2026-27755 is a critical vulnerability published on February 27, 2026. SODOLA SL902-SWTGW124AS firmware versions through 200.1.20 contain a weak session identifier generation vulnerability that allows attackers to forge authenticated sessions by computing predictable MD5-based cookies. Attackers who know or guess valid credentials can calculate the session identifier…
When was CVE-2026-27755 disclosed?
CVE-2026-27755 was first published in the National Vulnerability Database on February 27, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27755 actively exploited?
CVE-2026-27755 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 65.8% of all scored CVEs.
What is the CVSS score of CVE-2026-27755?
CVE-2026-27755 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-27755?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27755, 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.

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