How severe is CVE-2015-0681?

CVE-2015-0681 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2015-0681 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-0681?

CVE-2015-0681 primarily affects Cisco Ios. In total, 62 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-0681?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-0681 published?

CVE-2015-0681 was published on 2015-07-24 and last updated on 2026-06-17.

CVE-2015-0681

CVE-2015-0681 is a high-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: High (CVSS 2.0 base score 7.1)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Ios
Published: 2015-07-24
Last modified: 2026-06-17

Description

The TFTP server in Cisco IOS 12.2(44)SQ1, 12.2(33)XN1, 12.4(25e)JAM1, 12.4(25e)JAO5m, 12.4(23)JY, 15.0(2)ED1, 15.0(2)EY3, 15.1(3)SVF4a, and 15.2(2)JB1 and IOS XE 2.5.x, 2.6.x, 3.1.xS, 3.2.xS, 3.3.xS, 3.4.xS, and 3.5.xS before 3.6.0S; 3.1.xSG, 3.2.xSG, and 3.3.xSG before 3.4.0SG; 3.2.xSE before 3.3.0SE; 3.2.xXO before 3.3.0XO; 3.2.xSQ; 3.3.xSQ; and 3.4.xSQ allows remote attackers to cause a denial of service (device hang or reload) via multiple requests that trigger improper memory management, aka Bug ID CSCts66733.

Frequently asked questions

What is CVE-2015-0681?: The TFTP server in Cisco IOS 12.2(44)SQ1, 12.2(33)XN1, 12.4(25e)JAM1, 12.4(25e)JAO5m, 12.4(23)JY, 15.0(2)ED1, 15.0(2)EY3, 15.1(3)SVF4a, and 15.2(2)JB1 and IOS XE 2.5.x, 2.6.x, 3.1.xS, 3.2.xS, 3.3.xS, 3.4.xS, and 3.5.xS before 3.6.0S; 3.1.xSG, 3.2.xSG, and 3.3.xSG before 3.4.0SG; 3.2.xSE before 3.3.0SE; 3.2.xXO before 3.3.0XO; 3.2.xSQ; 3.3.xSQ; and 3.4.xSQ allows remote attackers to cause a denial of service (device hang or reload) via multiple requests that trigger improper memory management, aka Bug ID CSCts66733.
How severe is CVE-2015-0681?: CVE-2015-0681 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2015-0681 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-0681?: CVE-2015-0681 primarily affects Cisco Ios. In total, 62 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-0681?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-0681 published?: CVE-2015-0681 was published on 2015-07-24 and last updated on 2026-06-17.

References

Affected products (62)

cpe:2.3:o:cisco:ios:12.2\(33\)xn1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(44\)sq1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.4\(23\)jy:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.4\(25e\)jam1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.4\(25e\)jao5m:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ed1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ey3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.1\(3\)svf4a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(2\)jb1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.5.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.5.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.5.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.6.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.6.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:2.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1s.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1s.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1s.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1s.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1s.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1s.5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1s.6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1sg.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.1sg.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2s.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2s.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2s.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2s.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2se.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2se.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2se.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2se.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2sg.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2sg.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2sg.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2sg.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2sg.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2sg.5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2sg.6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.2sg.7:*:*:*:*:*:*:*

More vulnerabilities in Cisco Ios

CVE-2011-3271 — Critical (CVSS 10.0): Unspecified vulnerability in the Smart Install functionality in Cisco IOS 12.2 and 15.1 allows remote attackers to…
CVE-2011-0935 — Critical (CVSS 10.0): The PKI functionality in Cisco IOS 15.0 and 15.1 does not prevent permanent caching of certain public keys, which…
CVE-2010-1574 — Critical (CVSS 10.0): IOS 12.2(52)SE and 12.2(52)SE1 on Cisco Industrial Ethernet (IE) 3000 series switches has (1) a community name of…
CVE-2010-0581 — Critical (CVSS 10.0): Unspecified vulnerability in the SIP implementation in Cisco IOS 12.3 and 12.4 allows remote attackers to execute…
CVE-2010-0580 — Critical (CVSS 10.0): Unspecified vulnerability in the SIP implementation in Cisco IOS 12.3 and 12.4 allows remote attackers to execute…
CVE-2006-4950 — Critical (CVSS 10.0): Cisco IOS 12.2 through 12.4 before 20060920, as used by Cisco IAD2430, IAD2431, and IAD2432 Integrated Access Devices,…

All CVEs affecting Cisco Ios →

Other CWE-399 (Resource Management Errors) vulnerabilities

CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →