CVE-2009-0629

CVE-2009-0629 is a medium-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.4)
• EPSS exploit prediction: 4% (89th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Cisco Ios
• Published: 2009-03-27
• Last modified: 2026-06-16

Description

The (1) Airline Product Set (aka ALPS), (2) Serial Tunnel Code (aka STUN), (3) Block Serial Tunnel Code (aka BSTUN), (4) Native Client Interface Architecture (NCIA) support, (5) Data-link switching (aka DLSw), (6) Remote Source-Route Bridging (RSRB), (7) Point to Point Tunneling Protocol (PPTP), (8) X.25 for Record Boundary Preservation (RBP), (9) X.25 over TCP (XOT), and (10) X.25 Routing features in Cisco IOS 12.2 and 12.4 allows remote attackers to cause a denial of service (device reload) via a series of crafted TCP packets.

Frequently asked questions

What is CVE-2009-0629?

The (1) Airline Product Set (aka ALPS), (2) Serial Tunnel Code (aka STUN), (3) Block Serial Tunnel Code (aka BSTUN), (4) Native Client Interface Architecture (NCIA) support, (5) Data-link switching (aka DLSw), (6) Remote Source-Route Bridging (RSRB), (7) Point to Point Tunneling Protocol (PPTP), (8) X.25 for Record Boundary Preservation (RBP), (9) X.25 over TCP (XOT), and (10) X.25 Routing features in Cisco IOS 12.2 and 12.4 allows remote attackers to cause a denial of service (device reload) via a series of crafted TCP packets.

How severe is CVE-2009-0629?

CVE-2009-0629 has a CVSS 2.0 base score of 5.4, rated medium severity.

Is CVE-2009-0629 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0629?

CVE-2009-0629 primarily affects Cisco Ios. In total, 187 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0629?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-0629 published?

CVE-2009-0629 was published on 2009-03-27 and last updated on 2026-06-16.

References

• http://secunia.com/advisories/34438
• http://securitytracker.com/id?1021903
• http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml
• http://www.cisco.com/en/US/products/products_security_advisory09186a0080a904cb.shtml
• http://www.securityfocus.com/bid/34238
• http://www.vupen.com/english/advisories/2009/0851
• https://exchange.xforce.ibmcloud.com/vulnerabilities/49420

Affected products (187)

• cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2b:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2bc:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2bw:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2bx:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2by:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2bz:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ca:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2cx:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2cy:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2cz:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2da:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2dd:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2dx:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ew:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ewa:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ex:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ey:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ez:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2fx:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2fy:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2fz:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2irb:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ixa:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ixb:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ixc:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ixd:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ixe:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ixf:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ixg:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2ja:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2jk:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2l:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2mb:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2mc:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2rc:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2s:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2sb:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2sbc:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.2sca:*:*:*:*:*:*:*

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