CVE-2026-27515: Binardat 10G08-0800GSM network switch firmware versions prior to V300SP10260209 generate predictable numeric s

Q: How do I fix CVE-2026-27515?

10g08-0800gsm firmware: upgrade to newer than V300SP10260209. Exact commands for each OS are on this page.

Q: Is CVE-2026-27515 being exploited?

CVE-2026-27515 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-27515 affect?

CVE-2026-27515 affects 10g08-0800gsm firmware. Severity is critical (CVSS 9.1). Binardat 10G08-0800GSM network switch firmware versions prior to V300SP10260209 generate predictable numeric session identifiers in the web management interface. An attacker can guess valid session IDs and hijack authenticated sessions.

Q: How urgent is CVE-2026-27515?

Priority 44/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2026-27515 is a critical-severity flaw (CVSS 9.1) affecting 10g08-0800gsm firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Binardat 10G08-0800GSM network switch firmware versions prior to V300SP10260209 generate predictable numeric session identifiers in the web management interface. An attacker can guess valid session IDs and hijack authenticated sessions.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-330
Published	2026-02-24
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: binardat

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-24 16:24 UTCPublished CVE record published
2026-06-17 10:27 UTCUpdated Record last modified

binardat 10g08-0800gsm firmware UPGRADE

Affected: <= V300SP10260209

Fixed in: newer than V300SP10260209

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-27515?

10g08-0800gsm firmware: upgrade to newer than V300SP10260209. Exact commands for each OS are on this page.

Is CVE-2026-27515 being exploited?

CVE-2026-27515 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-27515 affect?

CVE-2026-27515 affects 10g08-0800gsm firmware. Severity is critical (CVSS 9.1). Binardat 10G08-0800GSM network switch firmware versions prior to V300SP10260209 generate predictable numeric session identifiers in the web management interface. An attacker can guess valid session IDs and hijack authenticated sessions.

How urgent is CVE-2026-27515?

Priority 44/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-27521 HIGH 7.5 UPGRADE Binardat 10G08-0800GSM network switch firmware version V300SP10260209 and prior do not implement rate limiting
CVE-2026-27520 HIGH 7.5 UPGRADE Binardat 10G08-0800GSM network switch firmware versions prior to V300SP10260209 store a user password in a cli
CVE-2026-27519 HIGH 7.5 UPGRADE Binardat 10G08-0800GSM network switch firmware version V300SP10260209 and prior use RC4 with a hard-coded key
CVE-2026-27518 MEDIUM 4.3 UPGRADE Binardat 10G08-0800GSM network switch firmware version V300SP10260209 and prior lack CSRF protections for stat
CVE-2026-27517 MEDIUM 6.1 UPGRADE Binardat 10G08-0800GSM network switch firmware version V300SP10260209 and prior reflect unsanitized user input

References

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